he's a rockstar from the early days.
I don't think the '90s qualify as the "early days" in reference to coding. When I think early days, I think '50s-'60s--others may think of something even earlier. If you are just referring to the commercial Internet, then the '90s could be considered the early days. But not for coding in general.
Lend money to a bad debtor and he will hate you.