It’s good, it definitely retains that… “silly but actually kind of brutal and depressing” thing the games have going on. Also it expands on the lore of Vault Tec, the “lifecycle” of ghouls, and some other little things. And it can be genuinely funny at times!
From what I've seen on the internet, the events of NV have been retconned in the show, and some people are upset about that. It seems the more of a fallout purist you are the less likely it is you'll enjoy the show.
Most casual fallout enjoyers seem to like it well enough.
Totally disagree. I'm a diehard fallout fan, played all the games and know all of the lore. The more you know about Fallout the better it actually gets. There are some small discrepancies, but can easily be ignored if you realize how well it ties all the stories together. It literally references every single game (apart of 76 and brotherhood), even the unreleased ones and picks up the good concepts from the cancelled movie