It's not like 30 fps gaming is a delight to me. But I still prefer it to fake frame insertion that makes animations look unnatural and jerky in my opinion.
ALso in regards to stutter, is it something that most people notice/pay attention to during normal playing conditions? I'd say no.
Stutter is obvious when you are creating conditions specifically designed to show it off. For example, in the Witcher 3, stutter is very very very obvious when scrolling along the in game map, and when you are looking around the screen in God of War 3. But when it comes time to fight monsters, is it noticeable? Perhaps if you're really really looking for it, but for the most part, I'd say no. Like you said, most gamers probably wouldn't prefer 30fps if a higher option is available, but given how many games utilize it, it's say to say it isn't a deal breaker.
In regards to MI, I have a very hard time believing that most wouldn't notice fake frames being inserted leading to all sorts of artifacing. I tested my C9 with TruMotion on and off and in all instances it created weird effects especially in areas with heavy movement. In the Witcher 3 yes, the map scrolling looked smoother, but it created a weird water like effect on the bottom of the screen and caused weird haloing/artifacts/posteurization. It does the same in other areas of high movement, particularly where Geralt was moving.
To be fair, I have not seen Samsungs implementation of it, I'm not inclined to believe it's anything breathtaking since I have not seen it highly praised or talked about.