It's just the author pointing out that the EOL for official support for Python 2 is 2020. After then, the Python dev team won't be providing any (free) support,

It's just the author pointing out that the EOL for official support for Python 2 is 2020. After then, the Python dev team won't be providing any (free) support, so people who want to keep using it will have to pay for it in some way -- whether by investing time in maintaining a fork, or by paying someone else to do so. The absence of a "Python 2.8" fork suggests that the idea of forking hasn't been popular enough to happen organically without someone putting money in, after all.