imo stretching is a highly under emphasized part of bodybuilding/growing.
i never saw anything about stretching or the need for it, and now that iv gotten bigger my mobility is very far down to the point that i was in discomfort even sitting in a fuckin chair.
now that iv been stretching regularly when i can i feel great and have slightly better mobility.
as for stretchignr ight after a intense workout, some say your ability to recognize the "pain" of too much stretching is hindered and you can tear muscles.
also right before lifting stretching weakens you to an extent.
but like the guy above, i have to stretch before squatting otherwise i am too stiff and cant get down far enough to do real squats.
but definately dont ignore stretching, its super important, i wish someone had told me that before i went to 2 years and gained 40 pounds of muscle without ever fucking stretching