It doesn't seem proton is neglecting their core apps, instead it seems they are getting more people, so each service has enough people. https://proton.me/careers

The reason they don't support Monero at the moment is due to a few reasons, one of those being, proton doesn't want to be a main support for illegal activity which means while they may adopt it eventually, they will be a late adopter. Proton is for privacy, not anonymity.

Checking with proton themself, the main reason seems to be to further resistance in case another instance of a issue they had in initial funding, where paypal blocked all payments to them. A wallet was also heavily requested by business users, and proton is using randomization to reduce tracking detailed on their site. So long as they next work on environmental impact to balance out this stuff, proton is fine still. Here is the code for the wallet: https://github.com/ProtonWallet

For those in Spain I suggest protonVpn

Wouldn’t it be more effective to just grant each user a way to pass verification with age with a token tied to some system and simply use a Ring signature so that user privacy is preserved and no need for limits?

Tbh me switching to Debian (using the KDE desktop experience) is feeling better and better, my PC runs over 3x faster, I have way more control over my own device, and everything works better than ever!