u/Foreign_Brilliant403

I have searched this group for answers but kind of wanted some opinions on my specific situation. I bought my truck last year in February 2019 Silverado 1500 Custom with 58k mileage. I am currently at 74k mileage. Dealer recommending a flush but from what I have researched it is only slightly better than changing fluid. The coat is around $400 so not bad but seen some horror stories out there about it actually causing transmission to be worse off. Any thoughts??