Different anon but in terms of lines I agree it could have been better distributed but when I look at whose singing what some of it makes sense. E.g the chorus is a lot of high and falsetto notes so it makes more sense to have the members who can hit them consistently and live do the whole thing than split it up
it does make sense to have those 3 do choruses they definitely could have had them actually sound like themselves rather than replicating the same layering but I think it could've been better distributed for the verses