It's like saying Mozilla is a for profit or Wikipedia is a for profit.
Having a for profit company under the non profit ownership is just to ease bureaucracy.
This doesn't change the fact that the ultimate owner is the foundation and so there is no shareholder to pressure etc.
A counter argument to this could have been exploring the OpenAI case and how it's trying to get out of the no profit model. But for some reason privacy YouTubers never make that much research into stuff... Almost like they are just earning on that engagement that you get when not being boringly nuanced :)
The YouTuber also states that 9 privacy policies are bad and tbh Proton could probably unify some of them but the thing is that they are actually different: they said in the past, for example, that privacy laws for VPNs in Switzerland are better than those for emails, so it's pretty ok to have 2 different privacy policies (I wonder if they could at least unifiy drive, mail calendar ones). Google can have just one because it's simply "we gather as much data as we can" for every service they have.