I disagree, i think they're getting a fair cut? A channel as large as LTT has stated that YouTube ads make up nearly 30% of their revenue.

30% isn't a ton, but when you consider that they can add brand deals on top of that (which they get 100% of) creators can walk away with a decent chunk. Additionally, when you look at the rev split it's actually the creator getting 55% (45% in the case of shorts). Bigger channels probably get better deals too, as is the case with Twitch as well.
IMO this all seems fair, puts a heavy reliance on Google which is a just criticism however to ignore the costs of storing immense amounts of data (500hrs of video uploaded/minute), making it available, and the infrastructure associated (bandwidth, global cdn, etc) is not