TBh, as much as I would love to see that it will never happen. Even with two working arms and full health it wouldn't happen.
Jack, isn't a cook, he isn't even smart enough to wash dishes in a restaurant kitchen, add that to being to lazy to do even the most simple things and his inability to adapt and improve himself and you know why his channels are as they are.
Jack never learned even the most basic things, like how to follow a recipe or to cut a simple onion. His knife work was already bad even before the first stroke.
Imagine Jack being asked to make a dry rub on his own or to make a simple pasta sauce without the canned/bagged crap he always uses, he would utterly fail.
Remember we're talking about a man who can't even cook a chicken breast to the point and gulps them down half raw.
In the early days of YouTube Jack was a celebrity.
His "Cooking with Jack" channel was established July 2006 and his "Jack on the go" in 2009, he was even invited to the first YouTube creator conventions.
But back then he was one of only a handfull of YouTube cooking channels and he was overtaken by other channels in popularity and viewer count pretty fast.
His decline in views already started in his first year. If you sort his videos by "sort by oldest video" you'll see that his first two videos had 3.1 and 6.5 million views and the next two dropped down to 948k and 154k viewers immediatley, sure, Jack, had one with 13 million views after that, but his overall view count went down and never recovered.
When he established "Jack on the go" in 2009 his channel has his most popular video with 561k views and it peaked in views right there. "Jack on the go" never really took off.
IMHO by 2010-2011 people already had alternatives to watch and "Cooking with Jack" started slowly dying.
Given how much of an asshole and how big his ego is, he most likely did, at least in his early years. I always assumed the bad reviews he leaves on Google are the result of some business owner not kissing his fat ass.
I'm also pretty sure Jack never went into a real restaurant, all he ever did was chains, small mom & pops and junk food stints. IMHO, a serious restaurant which is good at what they do is also good at keeping "Guests" like Jack out.
Jack's obnoxious attitude and rude way to treat wait staff certainly wouldn't fly in a restaurant outside chains and junk food restaurants.
But as we speak about YouTube and Jack, has he ever even gotten a
YouTube Silver Creator Award, for "Cooking with Jack" as all the other content creators with more than 100k and less than 1 million subscribers usually do?
I've never seen him mentioning it.