I concur about the ignorance, and the products are designed for just that audience. So many times, I've driven though apartment complexes and seen the "get beautiful at home" gear on the balconies.
To get bigger / hunky, one needs to work all the body, and needs to do so under resistance, with a caloric surplus. This is NOT a hard plan to execute. If you're smaller, like, say a gymnast, you can use the various gym apparatus to do body weight resistance, but, it doesn't take a MBA to understand that to develop yourself beyond that you need the facilities of a fully equipped weight gym.
While the poster can maybe work his back a bit, and to some push ups for triceps and chest, he's gonna' stay tiny in his current mentality. He also needs to work shoulders, legs, calves, abs, and so on.
To advise him that he is going to be successful with just something he bought at some store is really bad advice. He needs to join a gym, and if he has socialization issues where he feels he can't workout independently he needs to seek counseling so that he can understand why he is of such low esteem and how to address it in a positive way (go to the gym with a plan for success). The deeper issue with this young man is his lack of focus, lack of discipline, lack of a plan to achieve his goal, and low esteem.
Courage develops esteem. The military teaches that to young men every day, and every "real jock" has had a coach that taught them (or a drill instructor) to face their fears, and lack of faith, and brought them to a newer, higher, level, showing them that they are capable of more. More than anything this is an issue of courage. He lacks the courage to face new, unfamiliar, surrounding without some kind of security blanket (a friend, a trainer) so he's continues in his plan for failure.
The ignorance of the real issue (the lack of esteem, and no courage), and the unwillingness to address that by some, is a big disservice to the poster.
He knows what the issue is but takes the path of least resistance. That won't work if he plans to succeed.
Any of us who have competed in organized sports (be they team sports, or individual sports) knows what I'm talking about. Whether it's the first time you hit the mat, the court, or the stage, you have to take steps forward, on your own.
Sports is very polar. There is one winner, and one loser, typically. You're either instantly humiliated or glorified. After being a "real jock" for a while, you learn the glory of winning, the agony of defeat, and the satisfaction of the game well played, and a plan well executed. There are many parallels in our daily lives as well. That's the lesson of being a "real jock": strength under pressure, hard work, discipline, focus, confidence.
This young men would serve himself well to face his fears, join the gym, and become the hunk he'd like to be, but he has to do it. No one else can.