Nor would I be

Have you had a replace coolant notification crop up? Of course resetting the service date would be in order as that regular service notification may have been introduced (revised) due to the
LC coolant TSB which of course would not affect you as your coolant being a 2019 MY is not due for some time yet (120K km I believe, or 10 years).
On the other hand if an error notification was displayed, the problem could be one of the pumps, rather than blockage.
Did you talk with
Brody? He gave me
this schedule c/w prices last year which they use as a guide. The price to change the coolant is ~ 2.5 hr labour, which is close to the 1.9 hrs allotted in the original LC coolant change TSB. The price of the regular coolant (pink) on top of the labour should not be that high, I would guess ~ $200 (or less) about 1/4 the cost of the blue stuff. I suspect it may have been an honest mistake on that quote