They also can't opt-in to adblock or noscript or me choosing to run Netscape version 4. Developers fundamentally do not get a say on what I choose to run on my system; at best the only control they have is saying "nope we aren't even going to try to run on whatever you've got" but even that isn't a guarantee.

> They also can't opt-in to adblock or noscript or me choosing to run Netscape version 4.

This is a gross oversimplifcation

They also cannot opt-in if you don't have electricity in your house or don't own a computer

DOH!

This is not a real argument

A real argument is obsolescence

Of course there's a point when older versions are not supported anymore

Here we are talking about future versions breaking compatibility, without a shared consent, without a deprecation roadmap, that need to be supported, in a Chrome specific way, making Chrome the new IE for no real benefits to the user and a vendor lock-in by Google

When they users will try a different browser, for whatever reason, they will experience a different web, that for the majority of them being non techy will look like a broken web