I really hope so, as I have never played the original Prime trilogy, and want to play them all before 4. Have been meaning to play Metroid Prime Remake, but without any news of Remake of 2 and 3, or MP 4, wasn't prioritizing it, but going to play the first one soon now.
I've only played the first one, but I'm starting the second one on Game Cube soon! I still have hope they'll release 2 and 3, even if they're not "Remasters", it doesn't make sense that they wouldn't be selling them before Prime 4.
Yeah, there are lots of people (like me) who don't have any other Nintendo console other than Switch, so getting them all accessible would be good, but as they say, it's Nintendo, so who knows.
Dolphin runs pretty badly on low-end hardware in general. That being anything worse than mid-grade desktop hardware.
Depending on the specific game, it may be playable, but I wouldn't bet on it.
As a specific example, I have a laptop with an i5-1335u, and it can't run Twilight Princess playably at all, and Metroid Prime 2 doesn't work great either.
But my previous 10600k desktop had no issues.
And as a general rule, phones are less powerful than even low-end desktop hardware.
2 could use a remake, if only to finish polishing the dark world. I'm pretty sure it was just a "copy-paste, delete all the plants, make everything purple, and throw a couple rocks around" job. It deserved better.