Sonic 1 is a classic game and I prefer it to every 2d Mario aside from Yoshi's Island. The other sonics I can live without - sonic 3&knuckles aside - but sonic 1 is a superbly influential and creative game. Stages like Starlight Zone, Labyrinth, Spring Zone, and Scrap Brain Zone pushed what you could do with a 2d platformer that simply had not been seen before.
I haven't watched the video because I refuse to waste my time, but I can think of dozens of more overrated games: Ff7, super Mario bros 3, super Mario 64, f-zero, halo, Okami, god of war, its sequel Sonic 2, its first 3d game Sonic Adventure, and that's just getting started.