*Membership spots not really limited!
thats like saying its pointless to put supervillains in jail because they eventually break out. Sure, the real answer is to kill the supervillains, but that is obviously a last resort. Scott's "lets wait to see if this this blows us up or not" is in no way reasonable.
I honestly see the issue being between Scott and Logan now than I do it being between Scott and Cap.
I think the argument Bubba makes is far more likely than your saying, Logan even points this out in the comic.