They might adapt and support sending sms (hopefully) in addition to receiving them. I guess all other services which send sms verification code will switch to ask the user to send the sms, like google.
>>don't really see the point of a privacy-preserving workflow when it comes to a Google account. It's not like they need to know your phone number to track you.
More information is always better.
Also, if you can get a Google account, it's like a magic ticket to use services that want to violate your privacy. So, if you can get an anonymous gmail account, then you can use it for all the enshittified sites, and reserve your actual email for sending and receiving messages to humans.