I felt both SF and SP had their flaws but were both pretty good Bond films. They're different Bond films, and in many ways SF really isn't a Bond film in the traditional sense, and it's an outlier in relation to the rest of the films. That's probably why it was able to cross over beyond just fans of the film series.
If anything Spectre is the norm of the Bond films , not some deviation , which may be why alot of the non-Bond fans who loved SF are so disappointed with Spectre. It is more business as usual and really isn't all that different quality-wise from many of the Bond films imo.
Its just that the last film was basically an Oscar level picture, which the overwhelming majority of Bond films aren't. That may have created a new standard for what Bond films should be in some people's minds, but the reality is , that's really not what Bond films were meant to be.
I look at Spectre in the context of all of the Bond films not just one Bond film, which is why I liked it. Its quintessential Bond, more so than Skyfall imo.