You could drop blind tower repeaters everywhere to make signal strength based triangulation useless, but short of that the only solution is to not carry a cell phone or at least keep them in airplane mode.
Apps like Briar can allow people to communicate peer to peer.
Locating cellphones based on towers is based more on the timing advance and less on raw signal strength.
And I'm not sure what you mean by "blind repeaters"?
If that's the usual cheap dumb cellular repeaters one can find on ebay, than they will just cause noise on the cellbands if not properly installed and thus be actively hunted down by the telco as they degrade service.
Put the cheap dumb repeaters in vehicles, turned on only when in motion, or in backbacks, so the telcos have a hard time tracking them down.
Where possible, manipulate timing too.
Would this cause total chaos? Yes. Promise telcos the chaos ends when they agree to allow IEMI randomization like most WiFi devices do with MAC addresses today.
We will need some new forms of protest to get our rights to privacy back.
Apps like Briar can allow people to communicate peer to peer.