Is it a grind?
Well I'm not going to say it was quick for me to get all my suits and weapons, however, all the engineering has turned out to be optional outside a high CZ.
I can clear a settlement with stock gear, and there's G3 gear for purchase around in stations which will be more than enough against NPCs. It really is the case that if you're doing a mission and getting hammered by the NPCs, it's your tactics that are off. Every time.
The best rewarding missions will also require you to not kill anyone, so ideally you won't want to be in a firefight for those anyway.
Biggest thing though, unless you're saving yourself for things like CGs like the current one because you're only in it for organic PvP (which won't happen often, understatement of the day), every station has a place to upgrade weapons and gear to a sufficient level that you'll overpower everything anyway. Just do your thing and upgrade when you find you can do so.