Using tor to keep your communications secret is like having ACAB tattooed on your forehead - fine if you like the attention, not exactly useful if you don't.

It is when everyone uses Tor.

Nobody uses Tor: Everyone is surveilled.

Few activists use Tor: Activists are easy to pick and everyone else is easy to surveill.

Everyone uses Tor: Nobody can be surveilled.

Nothing to gain by not using Tor, only one way to win, use Tor and tell everyone else to use Tor too.

It's like the prisoner's dilemma, and not using Tor is like betraying others just in case things ever get bad.