It’s the job of British Governments and British Prime Ministers to apologise for colonial crimes committed.
The Queen has no authority to take it upon her own steam to do so.
It’s at British Governments and British Prime Ministers you should direct your ire.
This all smacks of the pedantic internet view of history where literally anything is desperately searched for to try and discredit an individual according to pre-conceived political or nationalist bias.
Gorbachev died recently. He actually did some genuinely bad things, which are not pedantic to point out. The army he had actual control of killed people in Soviet Republics, mowed them down. Repression continued even if it was loosened. He presided over the cover up about Chernobyl. Yet his contribution to history is widely seen as a positive one overall, and I think correctly so.
Winston Churchill did bad things and it is not pedantic to point that out. He is a complex figure historically. But again, when his contribution to history is measured, he has to come out on the positive side overall because he stood firm against Nazism when the world desperately needed him to do so, and unlike Stalin, who collaborated with the Nazis in the first place, he saw what they were from the get go.
As a ceremonial figurehead, the Queen had none of that real historical import or controversy. She had no power, did her limited duties well and was loved in Britain due to mainly to her longevity. I find it bizarre and quite frankly worrying for the individuals involved that anybody would want to celebrate her death.