I do get that, but that is what you get when you offer strong privacy, it's probably similar with GrapheneOS, and Signal (though there it's much less visible). When I see someone using Proton it's a signal they align with my values regarding privacy. To me it's a good sign, actually, one of the (friend) relations I have, started with "Hey you are also on Proton." Turns out she's a frequenter of hacker festivals etc.

I use Telegram for bots btw, nothing beats the ease of the Botfather.