The interruptions was the point. MC was getting edged. And you literally just listed off a lot of good content in this update. Sex is not a new concept and there's only so many ways a girl can give a blowjob. The girls were hot in their bikinis, the flirting got more risky, and the animations have improved even more. I'd call that a satisfying chapter.
And yeah. Complaining about development time is an exercise in stupidity. Every dev develops at their own pace, delays happen, and the development time has nothing to do with the content of the update itself. So it's stupid to whinge about it.