Also we have different kinds of Pathfinder GMs.
It's probably a generational gap.
Remember Gygax's love of murderous dungeons that killed
players for arbitrary reasons?
By 3rd, the Red Hand of Doom simply penalized
players for not keeping up with everything.
And by 5th, players hands are held. They can completely skip fights or even trivialize campaign bosses (Tiamat takes like five rounds to use her stat block, most of ToEE's guys auto die vs disarm), heck one of the best weapons in 5th is obtained by not killing