I think it's predominantly a luxury sector issue. When the exclusivity factor is lost, the premium prices no longer feel like value. With things everyone can easily afford, it seems to be less of an issue.
I currently see it happening with Dior beauty, it was always rather elusive and somewhat underrated. Spoken about it in hushes almost. They've ramped it up recently, hiring one of the models with the biggest followings, Bella Hadid, and hosting a boatload of events for high-level influencers. BH shows up in some of their videos (not vlogs, genuine content), etc. It's not completely turned me off as it's easy to ignore and there's no sign of it at counter but I'm aware there will be a turning point.
Similarly, Calvin Klein under Raf Simons has completely turned me off and made me think quite a bit less of RS (who I always esteemed highly) for hiring the entire Kardashian-Jenner clan for their ad campaign and helped fuel further pregnancy rumours with the specific shots they chose. The ad campaign doesn't just exist on SM it's everywhere and I can't take the brand seriously anymore as a result with how calculated it all is. Calvin Klein always had a long track record of being decidedly different in advertising in a creative novel way, yes, provocative, but this is so far from it.
What I did find interesting about the Unilever statement is that they're holding the SM platforms accountable, and I think that is a worrying development. We've seen it on TV, where cursing isn't allowed in the US, as everything has to be wholesome. If advertisers are going to be demanding the platforms are 'cleaned out' in favour of 'wholesome' it'll destroy anything authentic left.
The Maybelline move is also interesting, they're obviously aware that the currency of the beauty blogger no longer has as much value as it used to (in terms of excessive freebies they probably reign supreme) so branching out to another influencer sphere makes sense in that regard, but it's only for so long before they run out of influencer spheres to utilise.