Sorry if you feel it's waffling. I was mostly thinking about the later period, immediately before the Tudors, yes.
But the whole 'filthy pleb conquered' idea is ... weird. And out of date.
This is not about fashion. It's about detailed source work. People started looking at the languages actually in use, and the way they were used, and found that it was common for people to slip fluidly between two or three of the 'main' languages of England.
I know you know when the printing press was invented; my point was that people tend to imagine it meant a sudden huge increase in books available and in literacy, and the picture is more complicated than that.
I don't think the coming of the printing press to England really influenced the resurgence of English - it'd be too late a development, surely?
I'm sorry if I offended you by saying these ideas are old-fashioned - but, honestly, they are. This is a subject on which an awful lot of research has been done.
Now, if you'd accused me of being 'woke' or bowing to fashion because I don't tend to use the term 'Anglo-Saxon' or 'Dark Ages' then I'd understand (even if I disagree). But most of what I'm talking about isn't considered trendy, edgy scholarship at all.