This really isn't the club for something like this. It's primarily a club for members to use API data for projects.
My guess is that isn't something the site would do but you should contact support directly and they can give a better answer
https://support.chess.com/article/346-contact-us
Would I be able to make a chess bot to run on chess.com, so that I can evaluate aggregate player performance against it. (don't need any specific match data, per se)
I can answer a very important and specific question about chess with the results, and post the results back here.
Alternatively, if the devs promise to give me the data and let me write the blog post, I'll tell them how to make the bot and exactly what question it answers. The bot only needs to be available for a few weeks, maybe a month, to ensure the result it reliable.