Yes, Blender is better in a lot of things that other packages are missing, because Blender is not sculpting-software-only 
I def agree with you on a lot of things, but unfortunately Zbrush has a lot of advantages when it comes to an efficient workflow, not even talking about the sculping itself. I’m sculpting in Blender myself and am missing a lot of things; when it comes to “you don’t need high poly counts”, yes, but when you work with high level details in combination with e.g. Mari it’s far better with Zbrush.
Def depends on your role in a production environment and I absolutely understand why a lot of studios use Zbrush for sculpting and not blender.
Does this make Zbrush better than Blender? For a lot of things required in production settings - yes, absolutely. In general? No, because Blender is a whole package.
Coming back to the original topic, as I heard from another sculptor - if you’re starting out, start with Blender. Sculpting skills are transferable and it doesn’t matter which software you’re starting out in, it matters that you practice sculpting. If you then decide to apply for jobs in game/film positions, you can always pick up Zbrush (or be so good that you may inspire others to look at sculpting in Blender 
) .
It’s far easier and faster to learn software than it is to learn the things you do in that particular software, e.g. modelling and sculpting.