There are a lot of people commenting assuming that this guy actually wants to sell the domain for $10 million some day. I don't read this that way at all— it sounds to me like he's very content owning the domain but has set a really high number for which he'd realistically be unable to say no and publicized that number to try to get people to stop contacting him.

Unlike domain squatters he's actually using this domain actively, with an update this year. This is a charming and fun bit of the early internet that's still maintained and has a silly anti-sales pitch for the domain name to try to stem the flood of emails, not a greedy speculator sitting on a good property to maybe earn a profit.