For using BEM? You're completely right, nobody would get dragged into court for that.

For blindly copying 99%+ of thje ttorials and examples that rely on it, where EVERYTHING -- even headings -- are DIV so there's no alternative navitgation, anchors just slopped into NAV, etc, etc? Then yes.

It teaches bad habits that lead to non-semantic markup... and if one were using HTML properly one quickly finds that BEM becomes utterly and pointlessly redundant.

It seems to be a task compelxity mismatch at best, a "wah wah, eye dunz wunna lurn teh HTML" at worst.

This page ALONE:

http://getbem.com/naming/

Should make any competent HTML / CSS developer recoil in horror.

The moment you see something like this:

class="block block--size-big block--shadow-yes"

Run… just… run.