Is it? So why administering intramuscular testoterone has anabolic/androgen effects?
Intramuscular testosterone is the most common method of HRT for trans men / trans masc folks.
The effects of which are not "androgen".
Every anabolic/androgenic steroid has some degree of androgenic effects. Researchers and pharma tried for decades to create a steroid that has no androgenic effects, to no avail. Even a 5mg dose of Anavar, one of the softest steroids that were actively prescribed for women, had androgenic effects.
Testosterone has a 100/100 anabolic/androgenic ratio. It's definitely androgenic. It will literally put hair on your chest. I don't know what point you're trying to make here.