i don't know why people on r/edinburgh get so defensive whenever there is criticism about the city

I'm correcting your statement that the bus system in edinburgh is p shit in general, which is incorrect.

the world is bigger than edinburgh.

So? I live in the UK, so it makes sense to compare the Edinburgh bus service with other UK cities.

services in edinburgh have been rather bad, especially with regards to holiday timetables (practically nonexistent)

That's completely untrue, as even a cursory investigation would reveal:

https://www.lothianbuses.com/news/2018/11/christmas-and-new-year-timetables/

Why are you just making things up to complain about? And why choose things that are so manifestly wrong? It seems an odd thing to do, almost as if you weren't engaging your brain before posting...