Poser and studio come with a crap-ton of ready-made content, Poser even moreso than studio at over 20 gigs. They've added a bunch more with 13 so it may be closer to 30 by now. All of varying quality and age but most of that can be improved with updated materials.

Human generator is rather pricey and from what I've seen most of the options all look pretty much the same. And if you want to use it in anything commercial, like creating comics (a big thing in poser-verse) it will cost you $128. That's a lot more than the cost of most Poser and studio figures, and you still have to find content or build your own to populate your scenes (and none of them are anatomically accurate - the girlies don't even appear to have nipples).

And all of that is aside from the steep learning curve Blender requires. It's UI is nowhere near as newbie friendly as Posers or even studios. I use blender pretty extensively, I even went to school for 3D animation and even I have issues and frustrations with blender's UI. It is far from artist friendly and requires a lot of getting used to. So I don't put it in a class for total newbies.

Human generator is an alright product for someone who needs to create generic humans to populate power point presentations and similar projects but it's definitely not a replacement for the plethora of uses Poser has.

For that matter you might as well suggest folks to use UE's meta human. It's free, it's been around for a while, produces near life-like humans with an unlimited set of combinations and ethnic variety, yet Poser, iclone and DS are all still selling because, like Blender, UE isn't for the casual hobbyist that just wants to load, pose and render.

And the forums really are not a good way to gauge Poser's appeal. If it wasn't still selling well then they wouldn't be putting out new versions and updates. In the time Bondware has owned it there is now 2 new versions, not including all the refinement they did to 11. That's more than SM did in the same period of time.