Wow. I realise I hold the same sentiments but there is no way I could have expressed it they way you did. I totally agree that we should tread very carefully when proposing to amend or replace a document so deeply entrenched in the culture of the people and respected by all. The alternative is a scenario you described in regard to Canada and is a huge risk irrespective of who holds power.
On general, yes, however threads uses your Instagram username. I think it’s just initial excitement to try something new and people getting on the anti - X / twitter / Elon train and then realising that the network effect has way more pull