I understand them well, and I've experimented with their use in my own projects, and decided they're a minor complexity I don't need to bother with. And that decision has served me well.
Dogmatic adherence to "best practices" is silly, even when people can agree on what they are. Learn them, yes, evaluate them carefully, but ultimately choose what works best for your constraints. Including what your team's conventions are.
The programmers I've seen taking most about "best practices" generally don't think very critically about their approaches and go with dogmatic answers, often tying up their codebases in ridiculous complexity. E.g. the "best practice" now to make a website is a React.js SPA, and now every site out there takes 20 seconds to load with 10 little spinner icons while all the HTTP requests go out to their microservices on docker clusters, and everything requires a hundred-library-deep build stack.