Only one really close coworker/ friend knows of my 3 year plan at this point. She's on a 5 year plan herself so it's sort of an inside joke between us. It's nice having someone IRL who "gets it" and can chat about our progress.
OTOH retirement dates came up in discussion in the break room once, I threw out an age I was "possibly thinking about" retiring. The reaction wasn't pretty!
Responses ranged from "I have to work till 67 (or 70)" or "I'll be working till I die." This from people raiding their 401k for trips to Disney or buying giant SUVs to commute an hour.
Also heard "must be nice...married a sugar daddy, huh?" Um, nope, my DH is a spendy pants, but he's coming around. I'm just frugal & enjoy free or cheap stuff like biking, hiking with my dog, sewing clothes, jogging, trying to cook new recipes at home, etc.
So I learned my lesson & don't really broadcast my FIRE plan at work. Especially to the bosses. I'll give plenty of notice, but not 3 years in advance!