The main problem though is that Elizabeth wouldn't just kill all the Catholics in England. That would be insane and completely ASB.
Discriminate yes.
Mass murder no.
Discriminate yes.
Mass murder no.
But what if the events we see in the movie "the golden age" resulting in Elizabeth getting the idear, that her Goal in life is to remove Catholism from Europe completely?
I think Elizabeth did kill a lot of Catholics, although whether they were lay English Catholics or priests (foreign or otherwise) I cannot recall.
I do recall disemboweling and some sycophant claiming that Elizabeth had done only as Moses and Jehosaphat did (imposing religious conformity by force).
They were executed on grounds of treason, not because they were Catholics. It was Cecil someone who came up with the test (a little bias shall we say) of 'if England is invaded by the Catholic powers, who will you support the Pope or the Queen'. Most Catholics went 'The Pope' and that was considered treasonable, in the right circumstances-I don't think it was a case of rounding up random catholics and asking them this, it was more a case that ones expected of treason were asked it.