Maybe yes, Maybe not.
Most of the youtubers I used to watch years ago have become full-time Twitch streamers and their channels now only serve for highlights. My currently watched content revolves mostly around memes of specific games (most of which may also be available in other platforms at the expense of subtitles).
At least for now I can say that I could live without Youtube as ~90% of my entertainment on the web currently comes from outside the platform.