Earlier quoted context omitted.
Medium has for me become a signal for "likely shallow and low quality".
Whats for you the signal for high quality?
I suspect quality means different things to different people and even changes based on context for the same person.
For instance, a blog describing some arcane linux command to run to fix the issue you're having does not need to be the same level of quality as something you're reading to learn + get in depth info about a topic you know at a very shallow level.