Yes, it really is a problem.
Every time I need a humanoid foe (low level scum footpads and cut-throats; a level 5:ish barbarian-y guy, the stats of a PF1 level four mercenary captain etc) I would desperately have loved it if a selection of NPCs were included right in the Bestiary. Both to save time, but mostly to provide direction and inspiration: how does Paizo intend for us to stat up these guys.
Like the NPCs in 5E's Monster Manual. They were used over and over again.
Later on, I could find individual NPCs in adventures, like Hallod, a level 4 scumbag and "NPC rogue". But I would still have preferred a good selection right in the Bestiary.
There are lots of other rules I use less they should have prioritized lower than some basic humanoid NPCs.
Not all campaigns are monster-bashing dungeon delves only.