Judging by my previous addiction, I would say youtube desktop and youtube mobile experience is on par, also I believe TikTok is more comfortable on mobile(I never used it though). Same applies for the rest of social media. When you are sitting in a class and splitting your attention between what is being taught and your distraction, that distraction is unlikely to be some serious activity, because serious activities demand full attention
So you have a choice:
- make-yourself-a-desktop which is time-consuming, has dubious reward(what linux can do that Windows/MacOS can't?[1]) and is not comfortable to use everywhere
- phone that gives you all the means to distract yourself, is always in your pocket and requires no effort
If you don't explicitly aim to avoid the latter path I don't see any reason to choose your method
[1]: Having said that, I would never put windows on a personal computer. Answering my own question, there are certainly needs where Linux fits better, but for general desktop not so much