I mean look at Bundy V1. Law enforcement did not want to die over a few cows, so they said fuck it. Bundy (senior) is still grazing his cattle on that land to this day.
Law enforcement is not any braver than you or I, if they don't have overwhelming firepower they fall back on their first commandment which is "the policeman goes home safe to his family at the cost of absolutely everyone else including defenseless children."
Look at the MOVE bombing, etc - if they wanted to glass the Bundys, they would have. Safety wasn't the reason they didn't.
I wouldn't describe 'safety' as the state of things after the last time feds glassed a right-wing adjacent group. When the feds 'glassed' Waco, a little known guy named Timothy McVeigh was there. He used it as inspiration to bomb a federal building at which there were 700+ casualties of which over 150 were deaths.
The feds were very much aware "Bundys" was not just the ranching family but a whole bunch of people and greater militia network. If they had glassed Bundy himself it would have been a total shit-show.
I probably agree with your position in general. I would note that from my position it's more about the politics of the right and how that's more tolerable for folks in power.
Consider Michael Reinoehl.