In my mind, I kinda hope that data they used to back this decision up was asking "Hey, all you other volunteer Python language devs? How many of you want to work on the old Python2 codebase still? How many of you would prefer to be working on Python3? OK, that's just about unanimous. How about we all get drunk on Newyears and shut it down on Jan 1st?"
You can still get Microsoft Windows XP support today. If you're prepared to pay enough.
I wonder how many of the people who're upset by this have ever or ever worked for companies that've ever sent anything more than pocket change to the people Python?
Mind that there is a feedback loop between data of current usage and an eol announcement.
If they announce an EOL close by this creates pressure to migrate.