Yes and no.
It is true, but its not that simple because individuals responce to drugs is waaaay different from person to person.
One person gains a lot on a blast, some gain less. Some people maintain a lot on a lower dose, some dont.
What i think happens is… if you could maintain more on your TRT, you would also be able to gain it, just in a longer time.
For example, if one could blast 3 grams for 4 months and then maintain the solid gains(not the post-blast gains, but actual gains) on 300mgs a week, i believe he could be able to reach same gains on just 300mgs a week but in maybe a year or more.
if you hormones dont let you build more, im not sure they will let you maintain more. I also do believe that cruises also dont let you maintain forever. They just slow down the degradation pretty good.
I really think that if someone blasts 3grams and cruises on 300mgs, if he would cruise for 5 years on 300mgs, his body would come to the point at which he could have been by never blasting and being on 300mgs for these years anyway. Its just that cruise is to slow down the degradation, reduce stress, and let you blast again before you actually lost muscle.
A true TRT is mimicking you natural levels, which means that if you blast and then TRT you dont get the troubles and risks of PCT but you do lose gains in a while because why would you be able to maintain your blast gains on natural levels of test?
The PCT is a different problem - it digs a deep hole that needs to be filled before you even get back to natural test, and with it comes a lot of problems and struggles. Going back on TRT cancels these, but it doesnt change the fact that if something is built on more, it has to be maintained on more.
Idk how it is in USA, but im my country we have this thing where you can buy a house that costs like 200k, and pay for it your whole life monthly, but when the payments are done, you actually have paid at least 400k.
The thing with this is that the monthly payments are bigger if the house is more expensive at the beginning. So if you would buy a 300k house instead of 200k house, not only you pay more every month, you also end up overpaying more.
The blasting and cruising and maintaining gains works exactly like this. The bigger the blast makes you, the more the monthly fees(cruise) is needed to maintain it.
It is ridiculous to think that one could blast like a mofo and then maintain all the goodies by staying on the safe side of steroid use. Nothing in life works like this. Nothing.
TRT is better than PCT because you dont have to recover from the hole that stopping steroids creates, but its not enough to maintain gains. It just slows down the losing speed. And as i said - i believe a cruise does so also. I dont think anyone can blast up to 300lbs by doing grams of shit for years and then actually maintain it forever on 250-300 or even 500. I believe the losing process would be slow enough that we might not see it and feel it so much, but i really think that unless the person has like Jay Cutler genetics, if you blasted on 3 grams, and then cruised on 500mgs for 5 years you would end up lookling like a person on 500mgs who never blasted.