Don't blame the public – blame Louis Walsh!
If he hadn't been so ridiculously nationalistic, he wouldn't have put them through. But of course, they're Irish, so he seems to think he's legally obliged to do so.
As Paul22118 says, every time these two no-marks stay in, someone else more worthy has to go.
It's Strictly Come Dancing all over again – remember John Sergeant? The public kept him in just for devilment and now the public are doing it again with these two talentless children.
Louis Walsh – what a berk.