The Connery-is-bored trope has become conventional wisdom, but not everyone subscribed to it. Here's Pauline Kael's capsule review:
The fifth of the Bonds, it can easily be differentiated from the others because it's the Japanese one. It's a product, but probably the most consistently entertaining of the Bond packages up to the time--not as startling as parts of GOLDFINGER but much superior to THUNDERBALL. Ken Adam's sci-fi production designs (including a hollow volcano) seem almost perfectly calculated for the genre. Lewis Gilbert is a rather more humanistic director than his predecessors and he's a reasonably efficient traffic manager; he doesn't let the actors loiter on the sets too long. And Sean Connery's James Bond isn't the sleek, greasy-lipped dummy of the earlier films; playing the super-hero as a paunchy, rather bemused spectator, Connery gives him more character than he's ever had before. This casual, human Bond is rather tender in his sex relationships--one might almost call them love relationships this time. The Roald Dahl screenplay (out of Jules Verne and old movies) is clever enough, and Donald Pleasence, as Blofeld, pets his white cat ominously.