I'm a Fallout fan and I went in with appropriate expectations (expecting a AA multiplayer Fallout game by a new, untested developer), it's as simple as that. Do I think it's amazing and that it deserved some award nominations at The Game Awards next month? No, of course not (well maybe a best soundtrack nomination because Inon Zur killed it, easily one of the top 2 soundtracks I have heard this year). But neither do I think it is terrible like the critics seem to, I'd say it's at least above average. It's far from the best game I have played this year. but that doesn't mean it is bad because I have mainly played good-amazing games this year (DragonBall FighterZ, Far Cry 5, God of War 4, Detroit, Spider-Man, Shadow of the Tomb Raider, AC Odyssey, RDR2), but I am enjoying it more than a few other games I tried this year like Monster Hunter World and Sea of Thieves (neither is bad per se, they just weren't my type of game).
It's also worth noting that I rented Fallout 76 from Gamefly, if I had paid $60 for it like every previous Fallout and Elder Scrolls game since TES 4 in 2006, I would probably be a bit more disappointed than I am.
How is it as a single player game? I enjoy simply exploring the map so the absence of a story is not a problem. Is the world still fun to explore like in Fallout 4? Can you play without interference from other online players? (Can you play offline?) I always enjoy the stories hidden around the map in Fallout games and at a discount I would still pick this up. Give me an interesting map to explore and I'm happy. A good soundtrack is always appreciated as well!