One of the things FP was known for was sign stealing. He was apparently pretty good at tipping pitches to the batters, which is likely part of why he hit in front of Barry Bonds for a while.
He's excellent at reading signs and other nuances of the "inside" game, and he's at his best when he shares his observations in this vein.
A few years ago he was repeating the nonsense about humid air being heavier (i.e. more dense) than dry air and thus the ball wouldn't travel as far, which is BS. But after getting pounded for a few days
he must have consulted the Googler and to his credit he stopped with that misinformation.
I would say he's mildly annoying at times but not so much enough to complain about it.