PiS is catofash, interwar style. Konfederacja is basically really a confederation of political rejects from other rightwing parties: libertarians, neonazis, monarchists and remnants of the weird right-populist experiments which main bodies got eaten by PiS.

I don't think they are lesser evil and i don't think they will survive their (unlikely) success - the only thing keeping them together is their lust for parliament stools.