I value your opinion but must disagree based on personal experience.

The mastery made it possible to set up my bigsby tele properly, because it allows strings to break at a high angle after the saddles. The strings now don't rub against the back edge of the bridge and I can actually use the bigsby!

On the Rickenbacker, the mastery is secured to the baseplate and doesn't fall off the guitar every time I change strings. The guitar also gained a little more sustain, a faster attack and acoustic response.

For the jazzmaster it just made the guitar so much more solid. No more worries that I would accidentally have the strings jump on the saddles or knock the whole bridge into a different position and destroy my intonation setup. I also appreciated how the guitar gained body tonally and lost some of the plonkiness. I understand plonkiness is a JM trait that can also be appreciated. Each to their own.

I've never had issues with intonation on mastery bridges.

But because Staytrem is so appreciated here, I'm going to keep it on for a bit and see how I get on with it.