The most infuriating thing about Twitch ads is that it insists on running a thirty-second pre-roll ad. This is a platform where the focus is on liveness and immediacy, where you're very likely to open a stream because what's happening right this moment is interesting (e.g. a speedrunner on world-record pace), and then that same platform forces you to miss out on that live moment.

Literally any other form of advertising would fit Twitch better than pre-roll ads. Even a shorter pre-roll ad would be better (and probably lead to better retention). Gating people for a whole half-minute from a live event like that implies, at least to me, a company that doesn't understand their own platform.