Well your question gives me the impression that you think tweening and deltatiming are complicated, in which case, no, probably not. I don't personally think either one is complicated, although precisely which one is more complicated will depend on your game choice as well as personal taste. In general, delta timing requires less work up-front, and then you have to remember to multiply everything, whereas tweening requires no changes to game code, but does require more work up-front.
The only simpler option is to create a timer and just update and render when that timer ticks, but it doesn't solve the problem of machines which can't maintain the desired framerate, as the other solutions are intended to do. In other words, it only slows fast machines down, it doesn't stop slow machines being slow.
The only simpler option is to create a timer and just update and render when that timer ticks, but it doesn't solve the problem of machines which can't maintain the desired framerate, as the other solutions are intended to do. In other words, it only slows fast machines down, it doesn't stop slow machines being slow.