For what it's worth, my experience:
I own 2008 Honda Accord elx-4 since new, 16 yrs in MN. Flush brake fluid every 2-3 yrs. Never have any problem with calipers.
I bought 2011 MDX in 2019, 13 yrs in MN. Brake fluid looked original when I bought it but flush afterward. Last Oct., right rear...