As an author and past maintainer of a popular open source package I kinda understand his position. Users can be very demanding - "it doesn't work in my edge case", "fix xyz asap", "why is xyz still not supported", etc.

Do they not realise that I wrote it in my free time, dedicated days and weeks of work to it, shared it with the world for free, saved the users heaps of time, and got nothing back?

Yet many feel entitled to demand an urgent action and priority support. For free of course.

In the case of my project I was lucky that the community took over and I could walk away, leaving the project in the hands of those who still care.

This Marak developer apparently chose a different, rather radical approach. His choice. He owes you or anyone else nothing.