This thread is filled with mostly delusionality, but also a hint of legitimacy. The "Top 3" C-Goal was marketing click bait since he actually meant Top 3 age group finish.
If you're a current/former runner who likes to sit with your arms crossed and judge people based purely on results, then Seth's channel isn't for you. Don't watch. No one is making you.
If his short vlogs give you a hint of positivity and motivation, then watch. I personally tune in to the shoe reviews exclusively, rather than his personal life stuff, and have learned a lot about shoe companies I haven't bought from.
Some in this thread have been critical of the "corporatization" of Seth's channel the last 6-12 months. I tend to agree, and have gone from a daily viewer to an "every once in a while if a shoe catches my eye" viewer. But I disagree that he's egotistical. It's just business/YouTube. As a weekly podcaster, I can't imagine coming up with content on a daily basis. But that's why running is my passion and escape, not my career :)