Kudos to you for posting for the sake of denying them. I won't watch because I'd rather keep blind; I actually really enjoyed GTAV (once it was on PC and sold for next to nothing lol) and I'll probably get this several years after release the same way. I'm remarkably good at avoiding spoilers for unreasonable amounts of time (e.g. I found out the cake was a lie a decade after Portal released, lol).
Also fyi, GTA games are generally good and you can tell the writers and world builders had fun with it despite their shit management. It's not a bad idea to pirate or buy at a strict discount to at least see the story they created. Plus, I'm an LA native and GTAV is practically a documentary!