Accelerate with cruise control

Hi, I’ve already looked for the topic in some forums and found a lot of things. Only the mentioned vehicles are older and would like to know what it is like for newer cars. My Opel Astra K 1.4 150 hp automatic is year 2016. I have also seen a video about the topic in which it is shown that you can accelerate with the cruise control. But is this also good for the engine or other components? The consumption is now put there, but should be better. If the cruise control accelerates. Is this harmful in the long run? If I have saved 70km/h for example and drive on a continuous 70s zone and there is a red traffic light. Then I actually only have to roll and then hit the cruise control and it accelerates to the last stored speed. I happen to happen on the highway and the transmission switches down really far. Is probably wanted because of the ideal efficiency of the engine. Can you still give me a little bit of speed. to say on the topic and make it clear whether this can have harmful effects? Thank you already once and beautiful Sunday still