It doesn’t make the games “completely unplayable” because there is, obviously, a huge player base for all these games, and many others.
They may not be suited to my tastes, nor suited to your tastes, but that doesn’t mean they don’t suit many, many, many people. Enough for Microsoft to pay 69 billion dollars for, at least.
PUBG had a small map with PVE elements for one season, with games only lasting about 10 minutes, and I played it a lot at the time. But it got stale pretty quick. It was easy to play and win, but didn’t have the depth that brought me to the game.
There’s a reason PUBG corp has gone back to focusing on its bigger maps, because they are overwhelmingly more popular. The core gameplay and speed and weapons and pacing was built around a 8km by 8km map, and to this day that scale works best with those game design choices.
I don’t think PUBG corp needs to take game design advice from someone who isn’t interested in first person shooters, has never enjoyed battle royale games, and prefers scrabble puzzles over military tactics. 
