Nah I don't think he could pass for 28, like I said the hairline thing is starting to show and that's a big indicator. But then again, I know people several years younger than me (I'm 26) who look like they're about 10 years older and I know people several years older who look way younger. And I often get people confused about my age since I sometimes grow a big beard which makes me look very ambiguously aged.
Imagine if he does go fully bald, and he's still cranking out AVGN in 20 years when he's in his 50s. I mean, that's not a bad career all things considered. Just will be surreal to see that happen.