Can you imagine the outcry there'd be today if a villain was played by three different actors in three totally different ways, in three successive movies, as Blofeld was in YOLT, OHMSS and DAF?
They recast Batman twice during the last film series (1989-1997) without any outcry. Not to mention Harvey Dent going from Billy Dee Williams to Tommy Lee Jones.
That did occur to me, as did the Hulk situation; the Ed Norton replacing Eric Bana was perhaps different, as it was an outright reboot, but I'm not sure how anyone is to believe that Mark Ruffalo is the same character as Ed Norton (even his clothing and mannerisms seem different in the clips from Avengers).
I don't know if there was no outcry about Batman - there was a fair bit of comment about how ridiculous the recasting thing was, but these were all before there was quite as much internet discussion as there now is. And there was a fair bit of talk about TLJ replacing BDW, letters in genre mags etc. However, as the character hardly appeared in Batman and didn't appear in Returns, the intervening six year gap probably calmed some heads too. And given that BF saw a new Batman, the fact of a supporting character was very much secondary.
I'd say also that if Batman Forever was made today as the sequel to Batman Returns (2009), it would definitely be marketed as a reboot.
One other thing that also occurred to me was your point about the same directors directing Connery, Moore and Dalton, without feeling the need to 'stamp their own direction' etc on the character and series. Bond directors have always been hired hands to a certain extent, with the production company, Eon, being the ones who call the shots. Which was why Spielberg was knocked back when he wanted to direct a Bond movie in the 1970s.
And, moreover, the likes of John Glen etc seemed to have no problem being journeyman directors, hands for hire. Whereas every clown with a camera in Hollywood now fancies him or herself an auteur and an artist, with a vision!
(I'm going to an awful lot of effort to argue with you, given that I basically agree with your point and have long said that superhero 'reboots' should just go the 007 route!)