I just got mine last Friday (5-12) after waiting 19.5 months. Not only did I get '22 price protection, but my dealer found a rebate for $2700 for waiting so long. He found it on one of my weekly visits.
I just missed your 600 day club. Got mine this past Friday. 558 days. XLT hybrid, stripped of everything. Didn't talk to Ford much, never got any emails but my dealer was quite helpful on keeping me up to date the best they could. Understand your frustration