That may be true at present, but they’re in very small numbers in the USCP. A big infusion of pissed-off, motivated, erstwhile GOP conservatives would overwhelm the defeatists’ numbers. This would be preferable to having to disentrench the spineless, defeatist bunch of losers unwilling to fight for anything in the GOP.
Something similar happened in the Libertarian Party in early 2008, when a large number of pissed-off Conservatives departed the Republican Party (because of McCain, Romney, Huck, etc.) and joined the Libertarian Party and attempted to do just that, much to the horror of old-line, ex-hippie Libertarians, who still wanted to hang their hats on drug legalization, open borders, appeasement and pacifism, and abortion. That's how Bob Barr ended up being its nominee for the 2008 election, thanks to the brand new Conservative wing of the Libertarian Party.
An internal civil war ensued soon after that election and the liberal wing won, causing many of the disaffected Conservatives to do a second exodus, this time into Independent status. Consequently, for 2012, the Libertarian Party ran a platform based heavily on drug legalization and open borders, and descended back down into complete irrelevancy. In the meantime, the disaffected Independent Conservatives refused to have anything to do with Romney and stayed home in large numbers on election day, making a huge point that the GOP-E is refusing to acknowledge at its own mortal peril.