What kind of state is BF4 in these days, I stopped playing about 2 months ago because of the connection/server/general game issues.
Is it “stable” yet?
No
Depends on who you ask. I haven’t had a major problem in almost 4 months now. I play on PC however so i cannot speak for xbone or ps4 issues.
Hit or miss on xbone. NS is still laggy shite, and the servers are still either just fine or absolutely awful. The quick match selection typically sends me to a laggy server, so I tend to seek out local ones at the cost of only playing in semi-full games.
It’s always been working, in that the vast majority of people could play the game with decent performance, and enjoyed it.
If you’re asking whether the game is bug-free, I’d have to say no. None of them are. Some maps are laggy for some hardware configurations. Some servers have nasty rubber-banding. Some maps have graphical or structural glitches. None of these are “game-breaking.”
Playing on PS4 too. I’m loving it. For such a complex game, there’s few bugs to deal with. Servers still need some buffing, but they’ve already said they’re working on that.
Obliteration on xbox360 is a low percentage venture. I only complete 1 game per 3 freezes (requiring a reboot). The only solution I’ve found is to play after midnight when the kids are in bed.
What platform? I play on PC and it works pretty well. A few bugs here and there, but nothing that takes the fun or frustration from the game. What I mean by frustration is that I suck at FPS or video games in general.
How hard is it to write “no it’s still unplayable” I really hate one word answers
I was very drunk when I wrote that. To the point that I don’t remember writing it, so yep, agreed sorry! 
I play on PC and want a refund every time I load it.