Miss Dada  🏳️‍⚧️

As far as I can tell the Queen's only purpose is to sometimes meddle in Commonwealth governments (Canada, 2008, Australia, 1975, UK, now) and usually trigger a constitutional crisis

If the queen didn't exist, all of these would have still happened. The queen always follows the advice of the PM, going against the wishes of the government would be its own constitutional crisis.

Right, not saying they're her fault, just that whenever she's actually involved in the process of governing something has gone wrong. The causality is probably reversed: the only situations that call for her involvement are hairy ones anyway.

(I am being a bit flippant, but growing up in not one but two former colonies has given me a healthy resentment of the monarchy)

Absolutely. The whole "technically has a ton of power but never exercises outside of the will of the govt" thing is ridiculous. It makes sense for the UK to keep it (tourism $), but less so for the rest of the commonwealth.

Right, that's kinda my point.

I have a feeling that when the queen dies, we'll see at least one of the commonwealth countries remove the monarchy as head of state.

Yeah. Isn't it also the case that for at least one of these countries (probably Canada? I know more Canadians so I suspect I heard this from one of them) that the monarch is the current Queen, not "the monarchy of the UK" (i.e. succession isn't the same / doesn't exist)