It's depressing that 17 years later it still seems to lack a decent competitor.
https://help.github.com/articles/creating-new-files/
But yeah, it’s less user friendly. I’m sure someone will make a good solution for this soon.
99% of the time for 99% of the people who want it to do something (something realistic), it does it. In order to get people to switch to something like a static site backend it has to be much better than wordpress. It can't be as good, or a little bit better it's got to be waaaay better or it's not worth the time and effort to switch away from something you're familiar with.
They build container tech. That doesn't mean they will benefit from engineering the best solution for everything they do.
Content hosting sites are supposed to host content. That's what they do. If a site doesn't work under unusual but not outrageous conditions, it's fundamentally broken and not fit for purpose.
The industry should be much less tolerant of excuses for tools and systems that perform poorly under load. It's had a couple of decades to get this right now. How is it acceptable that this is even a problem?
You don’t need containers or in fact anything fancy for that.
With WordPress in particular containers make some maintenance and scalability issues more difficult to deal with.