All sounds a bit paranoid tin foil hat time to me.
I agree, have a punting phone single or not. I know I do. If not single then hide it following any of the great advice available on here. Use an unregistered sim if you want. But this hobby isn't illegal, in the unlikely event you get traced, it will be for a good reason. Just be honest with the police or Mi6, KGB etc etc😂😂