One thing, I am certainly not a professional here and this isn't advice
I was on well over a gram weekly of various things for at least 3 years running with no breaks. I never took any PCT or on cycle assistance like gonadotropins
I stopped using them a little over 2 years ago, and I never felt shut down in the slightest. I have not had blood tests for hormones yet have no symptoms of androgen deficiency
A lot of times when I see people suggesting PCT and on cycle support, they are representatives of companies that sell these products
Food for thought