Can, yes.
Should, maybe.
Enjoy doing, unlikely.
And for sure your home isp has all the email ports blocked upstream.
With all that being said, to call SMTP dead is wildly insane. I do figure it will die someday though. Probably around the same time of universal IPV6 adoption during the year of the linux desktop.
Indeed they are, but every single site wants my email and birthday before I can view content now. I don’t knock them for trying to make money from ads but I don’t need them selling my email address on the side too.