You are wasting your time, although I admire the effort. I don’t think I have ever seen such an historically illiterate set of posts on FR. The “grudge” was manufactured by centuries of Stuart and Catholic historiography. This thread resembles nothing so much as Orwell’s three minute hate.
If you want to read a contemporary account of Cromwell and his life, Lady Antonia Frazier’s biography is detailed and quite good.
“I don’t think I have ever seen such an historically illiterate set of posts on FR.”
Bravo. You can’t fix this sort of willful, trained ignorance, so you may as well laugh at it.