If it happened across multiple platforms (of different owners) and the band themselves are not complaining, months after the rename, it seems quite likely.

Note that if this was done against the band's will it would be fantastic publicity for them to say so. Everyone would be on their side.

Meta probably reached out to them to remove any uncertainty around sharing the Muse trademark, and this was included in the deal. The band themselves didn't lose any followers, it was a rename. They might have asked for a clause not to talk about the deal.