Seryph: I have no idea why you think they were "like the more regular spellings of Chaucer and many others (frend, lern, meny; beleve, reson, speke) and the adoption of far more complex ones after 1430 and many other silly, totally gratuitous changes."
Chaucer spelt nearly all the words which now have irregular spellings for e (bread, friend, heavy ...) with e (bred, frend, hevy)
and words which now have a clear, long /ee/ sound almost entirely with an open e (seke, speke, lene, grene, beleve, preche) - as we mostly still do with long a, i, o and u (late, bite, note, tube).
To me, regular spellings for a sound (speke, seke, beleve) are simpler than irregular, unpredictable ones which have to be learned word by word (speak, seek, believe), as in all 352 common words with the /ee/ sound.
I was not belittling your work any way. I know nothing about it.
I was thinking of people who write books about English spelling without doing any real research in earlier texts themselves - just regurgitating what they find in books written about it by others.
Perhaps this is because they find earlier texts with their great variety of spellings difficult to read, as u say u do 16th century texts?