You’re attempting a circular argument. If you believe the quotes are true, prove it. It’s impossible to prove a negative. You know that.
For reference I will point you to some of the finest recent scholarship on the subject:
“The Fleet at Flood Tide” by James Hornfischer
“Twilight of the Gods” by Ian Toll
“Downfall” by Richard Frank
These works annihilate this revisionist drivel into oblivion.
Many of the quotes are in this document.
https://www.govinfo.gov/content/pkg/CREC-2012-09-19/html/CREC-2012-09-19-pt1-PgH6128-2.htm