If you paint a duck, make a ceramic duck, paper mache duck, stuff a duck or draw a duck, its still a duck.
There sould be a good storyline and great lore attached to any game to make it part of a series.
that being said, i think a lot of old fans feel a sense fo entitlement.
of course its upsetting when something you love changes, but you dont have to bash those who just came to realize what fallout is/was as a result of that change.
Newer fans, should expect a bit of that from older fans and try to see where they are coming from instead of just saying that the game belongs to gamesas now, so "tough"
I am a "cusp" fan myself. Played a bit of F2, wasnt really anticipating liking F3 as much as i did.
The one thing i will say is that a lot of the lore inconsistancies that are brough up are most certainly not as big of a deal as they are made out to be.
at the end of the day, i will play all fallouts, because i like the post apoc genre and am a fan foo good storytelling and depth of in-game worlds.