What are you talking about? The user interface is somewhat correct and I am one of those people that like the minimalistic interface. With regards to puzzles, Lichess has a lot of good puzzles and even has a dashboard so you can see how well you do in certain areas. Credit where it is due, Chess.com does have better "original" videos than Lichess which some are surprisingly good although Lichess does have studies which I like to use and often works well with chess.com videos if you are watching an opening series or you want to take notes on a specific game. What seems strange is that you mentioned chess.com has articles but never mention it about Lichess. Makes people assume they don't have it and Lichess arenas are actually better and Gotham Chess said that and he almost exclusively plays on chess.com.
The registered users is a nice thing to have and just by looking at the stats while doing this response, chess.com has at least double the number of active players than lichess although both sites have high enough numbers that it's fairly easy to get a game. Although when you say aa rating system, Lichess also has one so you can compare with others (but not as conveniently but at the end of the day, your FIDE rating is more important than your rating on any chess site.. On top of that, you make it sound like Lichess doesn't have an app by only mentioning Chess.com. Lichess has a more practical app than chess.com. If I want to quickly look at an opening, I can do so much better than Chess.com because I can have the engine and opening explorer run at the same time and the app isn't as laggy as Chess.com partly because we aren't overfilled with beginners playing bots.
User Experience
One of the most important factors in any online platform is user experience. Chess.com is a more polished and professional-looking website than lichess.org. It is designed to be visually appealing and easy to use. The user interface is intuitive, and it is easy to navigate through the site. Chess.com has a user-friendly dashboard that provides quick access to all the important features of the site.
On the other hand, lichess.org has a more basic and minimalist design. While it may appeal to some users who prefer a no-frills approach, it can be less inviting for others. The site can feel cluttered, and it can be difficult to find the features that you need. The overall user experience on lichess.org is not as smooth as on chess.com.
Features
When it comes to features, chess.com has a lot more to offer than lichess.org. Chess.com provides a wide range of features that cater to both beginner and advanced players. Chess.com provides access to lessons, puzzles, videos, and articles that can help players improve their game. Additionally, chess.com has a built-in tournament system that allows players to compete against each other in a structured environment.
Lichess.org, on the other hand, has a much more limited range of features. While it does offer access to puzzles and lessons, the options are not as comprehensive as on chess.com. Additionally, lichess.org does not offer any built-in tournament system, which means that players have to rely on external platforms to organize their own tournaments.
Community
Another important aspect of online chess is the community. Chess.com has a much larger community than lichess.org. Chess.com boasts over 32 million registered users, while lichess.org has just over 1.5 million. The larger community on chess.com means that there are more players to compete against, and it is easier to find opponents who match your skill level.
In addition to the larger community, chess.com has a more active and engaged community. Chess.com offers a range of social features, such as forums, blogs, and chat rooms, that allow players to interact with each other. Chess.com also has a rating system that allows players to track their progress and compare themselves to other players.
Lichess.org, on the other hand, has a more passive community. While it does offer forums and chat rooms, they are not as active as on chess.com. Additionally, lichess.org does not have a rating system, which can make it difficult for players to track their progress and compare themselves to other players.
Mobile App
Finally, it is important to consider the mobile app experience. With the increasing use of smartphones, online platforms need to have a mobile app that provides a seamless experience. Chess.com has a mobile app that is available for both Android and iOS. The app is well-designed and provides access to all the important features of the site. The mobile app is particularly useful for players who want to play on the go.