i just remember years ago with the bros and they warned me if i didn't work hard on AAS i'd just get fat.
good to know there is some middle ground. i want to build a core. don't care about anything else.
There's a lot of potential reasons that you want to train concurrently with them besides the muscle growth side of things, but yeah, you will gain muscle.
The problem with doing higher quantities while larger or out of shape would be
Automatizing more - more of the testosterone will convert to estrogen
Blood pressure/heart rate issues - They tend to raise both BP and heart rate at blast-levels of dosing
Lipids - Crush your HDL, boost your LDL, same with LpA/LipoB
Hematocrit - Significantly increase your blood thickness
Left Ventricular Hypertrophy - Grow your heart in undesirable ways
Lower body weight/more activity (both resistance training + cardio)/etc. help mitigate these. It's a non-exhaustive list too, since there's stuff I'm missing, things that I left out that are an issue whether you are active and at a low bf% anyway, etc. Just tried to focus on some of the stuff that tends to be worse for less active and higher bf% people.
Even though at this point I'm lifting 5 days a week and doing a few hours of cardio split between the week, I'm still avoiding blast dosages like they used in that study because I'm worried about the health impacts.