It could happen, but I doubt it. I'm usually not a graphics and performance snob, but the game already has framerate issues on the lower end Playstation and Xbox hardware. I can't see it running well on Switch unless they really strip it down. I would prefer the dev team continue to try and push what can be done with the new generation as more of them are produced.
If it did come to Switch, I wouldn't pick up a copy on that platform. I'm an adult that drives to work, so I'm not playing while commuting, and if I were to go away somewhere I would probably bring the Series S and play on a TV. It just doesn't make sense for me. That being said, I played RTTS on my Vita years ago, so I at least understand the appeal.