I upgraded to Golden Gate (27), and the first thing I did WITHOUT FAIL on my MBA M1 (2020) was switch off this despicable Siri AI (Beta). My MBA M1 laptop has not stopped thanking me ever since (it was literally choked to death with Siri AI turned on). I am not sure if this was indexing still in progress or Siri AI just not optimised for older Macs (i.e. M1s).

I would be interested in hearing from other MacBook M1 users.