I went to school for actuarial sciences but im basically an overpaid python programmer. If an actual dev evee see my code, they would shot in the face for sure (at least my boss thinks im a magician because I do in half an hour in poorly optimized python code processes it took him days to do on excel). I don't even know what encapsulation even means lmao.
Basically if you need the same logic in two places instead of copying it to the second place you make it into a function and use that function in both places.
That way if you need that logic to change you only need to make that edit once regardless of whether you use it one time or one thousand times.
Dude, you don't have to be a dev to write code. There are many self-taught coders out there. I do agree that they should read a book or two regarding coding pracices, but hey, you don't like it, rewrite it 🤷.
Me, personally, if someone else made it, I need it and I don't have time to meddle (I usually don't), I just use it. With all do respect, fuck coding practices, I got more important things in my life to worry about.
Meh, maintainability is king. Sticking to the letter of the style law is probably not necessary, but ignoring badly structured code now is going to bite you in the ass when it comes time to change any of it.