Some days ago, I got annoyed with that, everyone couldn’t pick up my iPhone and start messing with Voice Control. And because I never use (or will use) this feature, I took journey to turn it off, ones and for all.
Google gave me some hints about daemons running in background, responsible for Voice Control interactions. With that knowledge in my head, I started moving them into backup folder:
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And after quick restart, no one could open Voice Control, because it crashed before any harm could be done. Excellent!