I don't really watch Hasan or streamers that much but there's ways of doing react content that does give exposure and cross promotion for smaller creators. Both react and exposure have just become corrupted as terms due to people taking advantage of it.

It's all weird attention consumerism anyway, which doesn't really matter. More important if a person represents an actual step in a socialist pipeline or countercultural pillar. Which Hasan seems to, at least from the outside.