I think the point is just because there's an EOL doesn't mean everyone will be ready or even willing to jump the ship. Companies run all sorts of old software. In 2017 7% of PCs were running Windows XP[1], which had EOL in 2014[2]. Why do you think an EOL will magically stop people using python 2.7? I'm sure even new code will be written after its EOL.

[1] https://www.businessinsider.com/how-many-people-use-windows-... [2] https://www.microsoft.com/en-us/WindowsForBusiness/end-of-xp...