Does taking Fin/Dut pretty much guarantee I will need TRT in 10-20 years?

Pretty much just what the title says. I have read a lot of anecdotal accounts on this sub about people who started in their 20s or 30s going on TRT in their 40s/50s. I know that Testosterone levels tend to dip significantly at that age regardless but I am wondering if there is any literature regarding this in relation to use of Fin/Dut? Additionally, had anyone on here been taking Fin for 20 years and not needed TRT?