Your nay-saying doesn’t necessarily make it so. I think Jon Hus asked a question that in all fairness deserves an answer.
But from what I’ve been able to gather he is correct Jon Hus (the Czech priest) taught a version of sola scriptura and during his trial for heresy he said he would only recant if he was proven wrong from the Bible, much like Luther did later on.
Hus was also a great admirer of Wycliffe, from England. Hus studied his works extensively and quoted or paraphrased much of them in his own writings. I believe Wycliffe is considered an early “English” reformer.
I believe it is in error to say that Luther deserves full credit for all of the Reformation ideas. Some of them were certainly in play at least a century prior to Luther in Renaissance European intellectual circles. This doesn’t make them right and it certainly isn’t meant to imply that these ideas stretch back to the times of the apostles.
en.wikipedia.org/wiki/Jan_Hus
ChadS