If that's the case, that's up to Proton to clarify. Because right now it's presented as a sponsor: the video has a sponsor segment, and Lapierre even thanks Proton for sponsoring him.

If he's lying, then Proton should state that he lied.
+ him "just using an affiliate link" would still mean that Proton is okay with a fascist influencer bringing them money and customers.

First, I don't have to ask Proton anything. I'm not a customer, and I have shared factual info on here because I thought people who are customers should know. And the facts remain: Vincent Lapierre is a fascist YouTuber, his latest video features a full-on Proton Mail sponsorship segment, with the sponsorship label overlayed in the top left corner as required by law ("collaboration commerciale"), and with a paragraph in the video description featuring a custom Proton link to his name. If this is not an actual sponsorship, then Lapierre will surely have gone a long way to make it seem like one.

Second, the link works for me. I'm wondering whether it's only active if you're visiting from a French IP or something. In any case, stop insinuating I'm a liar just because that link isn't working for you.