If you spend your time on youtube shorts or trending sure it's thrash. But I mainly watch math and science contents which is sometimes better than real courses and there is an uncountable quantity of knowledge on there
I guess you don't visit youtube then. Because its comments are mainly memes (like 95% of it), reference to some funny moments in the video or additional info related to it
I learned a whole year of highschool math in a week of holiday with KhanAcademy. Owned-paced curriculum would make school interesting for smart children and improve overall education. However it must be done wisely
Well pick the good content then. Most social networks will have that when used by large amounts of users