Sorry, bit this is just the standard "boil the frog" playbook that tech companies always use for user-hostile features. It's usually:
1) There is this new entirely optional feature, but it's not relevant to you, so feel free to ignore it.
2) The feature is now active by default, but no worries, there is a simple button for you to opt-out.
3) The feature is active by default, but because we value our users, there is an option in the advanced settings to deactivate it.
4) Our data shows that 99.9% of users activated the feature, but if you belong to the handful of diehards who still refuse to use it (rolls eyes), you can use this obscure command line flag or about:config entry to turn it off
5) Managing opt-out infrastructure for the feature has significant maintenance and security cost that we feel, we can no longer justify. Therefore, effective in three months, the opt-out flags will stop working and the feature will become mandatory. According to our metrics, this will affect 0.0001% of our users, so no disruption is expected.
Oof, this comment convinced me to go from loving passkeys to "maybe I should be careful". However, I don't think these are technological issues, I think they're policy issues. We need to vote for freedom of computing, and against corporations doing whatever the hell they want.
The "there is something wrong with you if you are at all off the beaten path" has cropped up a lot more for me recently; two examples both from 2026:
1. You can't use Firefox with our website (when I got this popup, I thought I had been transported back in time 20 years, but with Chrome substituted for IE).
2. You can't sign up for accounts with an e-mail from a "custom domain"
2a. I ran some tests; it's the domain itself, not the host, so e.g. [email protected] is allowed but not a [email protected], even if hosted by google).
2b. After a bit of back-and-forth with support: "No, we won't tell you the list of allowed domains, but gmail and hotmail both will work."