I am a harsh critic of the guy, but a redemption story would be nice. He would have to make a lot of changes. Can he? In my mind, he needs to:
Be himself and drop the whole DEE GEE ARRRR!!! schtick and persona.
Get a real job and begin vlogging about balancing work, family life, and running.
Quit the "mad scientist" BS. Get a coach or buy some books about exercise physiology and proper training.
Program his channel better. Three videos a week: a shoe review, a lifestyle piece, and a weekly update on his training with loads of pretty B-roll and mountain vistas. Three high quality productions and not seven craptastic episodes of just winging it.
Eat right and put on about 5-7 pounds. It will serve him well and his body will absorb the training better.
Focus on getting quality sleep. Cut out the caffeine and staying up all night fretting what you will vlog the next day.
If he does these things and trains in a lower volume/smarter planning sort of way, I wouldn't bet against him breaking 2:20 and becoming a force in master's racing. Or, he should go all in on the trail ultra scene. Either way, I feel that he could be successful and might grow his brand in an epic way. Authenticity and humility will serve him better than the "smiling on the outside, crying on the inside" meltdown that we are witnessing.