You can avoid many things by forcing yourself to use this and this practice. In my experience not all developers out there know what is "good" and what is "bad"

You can avoid many things by forcing yourself to use this and this practice. In my experience not all developers out there know what is "good" and what is "bad" practice and there are certainly many React developers out there who never heard about CSS modules. Let's say better it's not a flaw in React but a trap which can cause huge maintenance headache in my opinion.