Yes!!! Spock's "one of the boys" attitude throughout was surprising! Like, when Janice does get assualted, instead of accepting what Rand tells him, Spock's like, "it's illogical that the Captain would rape ... so, naturally, there must be an imposter on board." Then, like you said, Spock's razzing Jan about how she digs Kirk's lust and manhandling ways ... there's that "one of the boys" 'tude, again! "She was asking for it."
Someone new to STAR TREK can't be expected to know, or want to know, about Sixties television. Or what audiences of that era were about. They are being presented with STAR TREK as-is and stuff like that is jarring, frankly. I love TOS, it's such camp, so much fun, for the most part. And it certainly served as a solid foundation for my favorite STAR TREK - TNG - making it the best in this beloved franchise. But yeah, some of this stuff is just too hard to overlook, dismiss or "forgive." And no CGI is going to cover that up!