Why LOL is bad

While I dislike LoL, your argument is weak. When we play videogames, all we do is look at a screen and push buttons.
A better argument would be that it's sluggish, making it a little anticlimactic when pretty much anything happens, it's toxic, and not too accessible: higher-lvl players have an upper hand over noobs, not because of skill, but because of perks; loadingtakes a long time because people play on toasters; over 100 champions and a books-worth of items make learning it a chore; etc.