Robert wants Jace to have some sort of purpose in life. Right now he has no goals, so he gets faded, acts like a clown for cyberbullies, then gets himself into real trouble. If Jace had a goal to work towards, he might actually have a shot at a decent life. Rob isn't deluding himself though - he's not talking about Jace going out and getting a 9 to 5 job; Can anybody honestly see Jace surviving in the job market? Neither does Rob, so he needs something else to do.
What does Jace do that isn't self destructive?
He knows how to work Youtube and is pretty aware of what content is allowed and what isn't (he's always concerned about playing musical themes and other content that might get him flagged for copyright issues). He attempts to hide his bad behaviors such as smoking "tobacco", aware that drug use on his channels will get him banned (he just fails at it when he's off his meds and gets stressed out and needs a toke, being psychologically addicted to using weed as a means to combat the stresses in his life).
He made allies of people who can make decent video graphics for intros and effects. He attempts to use graphical effects to enhance the visuals of his show (E.g. he tries to use a green screen, and his American flag to set stages.)
He's enterprising enough to try new things. See all the various zones he makes when he thinks doing the exact same thing over and over is going to be boring to an audience, so he tries to mix it up with Fact Zone, Indie Zone, Review Zone, T-Zone, the hilarious Wolf Zone, (the painful and forgettable Meme Zone...)
He's fairly knowledgeable about video games, which is a subject that's popular enough for people to explore in internet media for profit (since Game Grumps, DSP, Pewdiepie, various review channels, etc. all exist and earn some form of living). He's certainly more knowledgeable than the average individual about them. He may not be the best at playing them, but with practice he improves to be competent. The part he usually sucks at is learning a new game - he doesn't do his research before he presents himself playing it (he doesn't know the key layouts or what to do generally then). He plays games he likes fairly well, such as CS:GO. Also, watch some of his earlier plays of Space Station 13 and Postal 2 versus his later plays - he's much more in control and generally starts working towards a goal after some time put into a game (such as being a barman in SS13, or destroying the secret Muslim base and rescuing Tupac in Postal 2).
He can draw a crowd - currently, he's drawing an audience for the wrong reasons. I assume this is what Rob wants to try and correct.
Lastly and most importantly, he has passion. He wants to be a famous vlogger and streamer, and puts effort into this, even if its only half-assed effort. Look at Christopher Weston Chandler's attempts to be a famous comic book artist - as time went on, he simply got lazier and lazier, until the point he wouldn't draw unless forced to by some outside entity - and even then, his later artwork started skimping on backgrounds and coloring and such. Jace, on the other hand, keeps trying to add more zone segments and backgrounds and video graphics and content.
So rather than push Jace into a situation where he'd be a stocking monkey at Costco or whatever, then get depressed, then fall into the same self destructive habits he's already exhibiting, Rob encourages him to follow his dreams, which Jace is already pursuing - Only problem is, Jace half-asses his attempts at his dreams due to drug abuse and delusions of grandeur. Jace lets his bad habits and problems get in the way of putting in the actual hard work it would take for him to be genuinely successful, and Rob wants to help with this.
That's my two cents anyways.