True, they don’t show commercial adverts in the UK, but they do to other countries. People outside the UK can access the BBC website but they’ll see adverts on there, and apparently BBC America (shown in the US) has commercial adverts
And Channel 4 of course does show commercial adverts in the UK, but I think they still make some decent content, and I don’t think they’re on the verge of self-destruction
Maybe the real problem is when an entity is chasing profits, because Channel 4 isn’t a normal for-profit business, since they’re owned by the government, and I think they have to abide by some rules
But then you could look at Channel 4, which does show ads to UK people, but I think Channel 4 is still okay and I don’t think it has been ruined by ads. So maybe a profit motive is what causes enshittification, rather than just ads. I definitely hate ads but maybe ads alone don’t destroy platforms.