I think the term "theatre" implies "is meant to achieve X but fails to", rather than "achieves X in a slightly flamboyant manner".

Like all the COVID-prevention theatre: sitting in restaurants and only masking when you visit the toilet. Hand-washing often whilst in unventilated areas with no masks. That's all "COVID theatre" IMO, as it fails to actually prevent the thing ostensibly being tackled.

My favourite one FWIW was wiping down the seat padding in the gym where nobody was masked - I mean who came up with that??

A creative hardware source of legit randomness is not the same as security theatre, and arguably has some useful educational aspect - it's certainly a talking point!