I LOVE Outer Banks. Let me make that clear. Beautiful screenwriting, immaculate cinematography, delicious acting. I became obsessed really fast, and it's the perfect mix of everything.
So by all means, go watch seasons 1-3 and you'll LOVE it. You can definitely watch 1-3 and treat the end of season 3 as an ending (it works)
But do not watch season 4.
SPOILERS AHEAD.
Season 4 starts off strong. Exploring the fan-favourite (JJ)'s backstory and character, which is what all fans wanted.
But at the end of this (4) season, JJ dies. stabbed to death, and audience watches him bleed to death, so it isn't like it's his death being faked.
Red Canoe Productions and Rockfish Productions have made a giant mistake, killing off the by far favourite character all the whole audience, and there' still a 5th season to come, which will be impossible to make enjoyable without JJ, who was a VERY major character.
I WILL NEVER WATCH OUTER BANKS AGAIN
because of this season 4 finale, I have cancelled my Netflix subscription. Disgusting.