The long term risks of AI drugs and HCG in men are not known.
Tesosterone in TRT amounts isn't known to be harmful. However, a lot of clinics give their clients 200 mg per week and call that TRT. 200 mg has been linked to heart enlargement in studies, which is a bad thing.
It is always best to use moderate doses of T to avoid the need for AIs if you can. Too many people jump on an AI when they would have done better to reduce their T dose instead. There is of course a temptation to use more T in the belief that it will make you grow more muscle, but it is not in the interest of general health.