Thanks for this.

Reusing already-prominent acronyms gets really confusing although I know often it's unintentional.

Many Americans won't know who the IRA were/are, but in the UK (and probably the rest of Europe) it's common knowledge and burnt in.

I find amusing the "troll" label applied to it. Trolling in my books is someone taking the piss out of someone else or a situation. We're talking about far greater reach here with devastating impacts.