Now that several US States laws and bills have been enacted for age ID verification laws, I think its now more important than ever to roll out this feature.

This is an interesting and ambitious idea, but it is important to note that identity verification and age verification at scale require alignment with government regulations and official standards. In fact, the European Union is already developing the European Digital Identity Wallet (eIDAS 2.0 / EU eWallet), which aims to provide exactly these capabilities in a privacy-preserving way.

What I would suggest to Proton is not to reinvent the wheel, but to participate in these pilot projects and shape them with Proton’s privacy-first principles. Seeing Proton involved in such EU-level initiatives would be a powerful signal and a great image for the company, demonstrating that privacy and compliance can go hand in hand.

For reference, moderators and readers can find more information on the official EU Digital Identity Wallet initiative here:
https://digital-strategy.ec.europa.eu/en/policies/european-digital-identity

You’re opening a dangerous door here, asking for this now.

I suppose that this could be the secure answer in which other big tech corporations are bringing up.

I genuinely wish that none of this was ever needed or required either. But I suppose if there's a "sign in with proton" feature for age verification that would work with other corporations, I would trust Proton more than anyone else.

Why should they verify in the first place? Considering that it is unnecessary.
Proton is not a social media platform or another adult service like a dating app.