No, Sigyn outright pointed out that Jotunheim is so cold even Asgardian's will eventually suffer from the cold which is why she refused to move there. And fuck messing with the climate considering that that ended up screwing us over and pissing off the Jotuns. Besides that we are already having some issues with Jotunheim and moving a large population and then trying to change the climate is not going to help things. And no, I'm not playing Amora, in fact I'm sick of people bringing her up since I wasn't even thinking of her in regards to this decision.
From a pragmatic standpoint fighting the Nova and someone with the Infinity Stones isn't worth the trouble and honestly we don't really get much from them while moving them to the Nine Realms has the practical benefits of us being able to start trade with them much more easily, especially with us having good relations with them and it being a much less painful process since we can just move them to one of the empty worlds in the Nine Realms like the Dark Elf realm and prevents them from being taken over by Lorelai while still pretty much keeping their freedom since Lorelai can't do shit if they move to the Nine Realms.
Seriously, people need to get over their control freak tendencies since it just seems like people are incapable of giving up any control whatsoever even when it really wasn't much. For gods sake we weren't even benefiting from the Skrulls much and we pretty much already let them keep their Independence.