Maybe it's free advertising, but every minute I spend watching someone play Game X on Twitch is a minute I'm not in the matchmaking queue. Honestly, there are a ton of games that I only watch on Twitch. I've never played League. I've never played Valorant. I just watch people play! Much less commitment.
I purchased hardware (a wheel), a new game, and started playing it because a streamer whose taste generally aligns with mine was playing that game this weekend. Then, I had him playing on one monitor while I played on the other. I don't think I'm alone in this.