Nice list.
Top 50 young players to watch out for

Players like Anish Giri, Magnus Carlsen and Fabiano Caruana are restricted in the progress of their rating due to the fact they can't play higher rated players anymore. That is surely of great influence on the rating of Magnus Carlsen.

I think 30 is too high of a ceiling for a "young players to watch out for" list. Not because of the "young" part, but because a lot of the players on the list are already established elite players, rather than ones to "watch out for" in the future.
Players like Anish Giri, Magnus Carlsen and Fabiano Caruana are restricted in the progress of their rating due to the fact they can't play higher rated players anymore. That is surely of great influence on the rating of Magnus Carlsen.
Not a theoretical barrier. He might keep defeating everyone else, and although they are lower rated than him, he would keep climbing.
He is not doing that.

Depends. If you wanna be professional or GM, then it's nothing special, but if you only want to be an amateur, it's quite good.

Players like Anish Giri, Magnus Carlsen and Fabiano Caruana are restricted in the progress of their rating due to the fact they can't play higher rated players anymore. That is surely of great influence on the rating of Magnus Carlsen.
Not a theoretical barrier. He might keep defeating everyone else, and although they are lower rated than him, he would keep climbing.
He is not doing that.
You do know that he occasionaly loses rating points in tournaments he wins (and dominates)? You can't beat these players 11-0, 12-0 all the time. Frankly, you never can. Not even the Mag. But clearly this doesn't mean that he's not a world apart, no?
Not a theoretical barrier. He might keep defeating everyone else, and although they are lower rated than him, he would keep climbing.
He is not doing that.
You do know that he occasionaly loses rating points in tournaments he wins (and dominates)? You can't beat these players 11-0, 12-0 all the time. Frankly, you never can. Not even the Mag. But clearly this doesn't mean that he's not a world apart, no?
It does mean exactly that.
Compare Vera Menchik. And the 4 Women´s World Championships 1931 to 1937. Won every single game, 45 of them.
Yet when she faced men, she consistently went to the bottom. Like Moscow, 1935 - last place of 20, with 3 draws and losing the other 16 games - next lowest was Vitaly Chekhover with 5 1/2 points.
Magnus wins tournaments, but does not dominate them. Which is why he is not a world apart of other grandmasters. There is a reason why his top Elo is just 2882, and has since fallen to 2850 or so. Not having a rating somewhere above 3000 while everyone else is under 2800.
Rating lists cannot account for young talents, because their rating, though high for their age, is not high in absolute terms.
I make an attempt to correct this and compile a young talent list in the following way:
1) I calculate the average rating for ages between 10 and 30 for male and female players separately based on the FIDE players list and take this as their expected rating
2) for all rated players between the age 10 and 30 on the FIDE players list I calculate the deviation of their rating from their expected rating and call this their rating surplus
3) I sort players according to their rating surplus
Here is the result, the young talent rating list:
( source: https://github.com/fideplayerslist/fideplayerslist )
1. Wei, Yi
2. Burke, John M
3. Abdusattorov, Nodirbek
4. Artemiev, Vladislav
5. Giri, Anish
6. Duda, Jan-Krzysztof
7. Sevian, Samuel
8. Pechac, Jergus
9. Carlsen, Magnus
10. Tabatabaei, M. Amin
11. Xiong, Jeffery
12. Caruana, Fabiano
13. So, Wesley
14. Keymer, Vincent
15. Ding, Liren
16. Hou, Yifan
17. Sindarov, Javokhir
18. Deac, Bogdan-Daniel
19. Smirnov, Anton
20. Li, Ruifeng
21. Yu, Yangyi
22. Van Foreest, Jorden
23. Rambaldi, Francesco
24. Rapport, Richard
25. Liang, Awonder
26. Firouzja, Alireza
27. Dubov, Daniil
28. Checa, Nicolas D
29. Nomin-Erdene, Davaademberel
30. Gazik, Viktor
31. Aryan Chopra
32. Esipenko, Andrey
33. Donchenko, Alexander
34. Fawzy, Adham
35. Tari, Aryan
36. Goryachkina, Aleksandra
37. Triapishko, Olexandr
38. Gledura, Benjamin
39. Nguyen, Thai Dai Van
40. Nguyen, Anh Khoi
41. Nyzhnyk, Illya
42. Matviishen, Viktor
43. Karjakin, Sergey
44. Robson, Ray
45. Radovanovic, Mihajlo
46. Fedoseev, Vladimir
47. Nakamura, Hikaru
48. Reznikov, Michael-Allen
49. Chandra, Akshat
50. Bukavshin, Ivan