We do know Rin also had a version of Meta Vision already... The thing about Isagi isn't just that, but him being able to combine that with his extreme adaptability, which isn't something others have shown to be able to do (again, maybe besides Rin).
I do think it would work better as "accept reality". It does have a bit more of the nuance explained better afterwards. It does have the "it's positive but is used with a negative connotation" as well.