The issue isn't that regex are a solution to find a substring. The issue is that you shouldn't be looking for substrings in the first place.

This has buttbuttin energy. Welcome to the 80s I guess.

It's fast, but it'll miss a ton of cases. This feels like it would be better served by a prompt instruction, or an additional tiny neural network.

And some of the entries are too short and will create false positives. It'll match the word "offset" ("ffs"), for example. EDIT: no it won't, I missed the \b. Still sounds weird to me.