Personally, I wish we had more TLDs. Many of the most useful ones are expensive because of rent seeking companies that became the main registrar for them.
I think you're taking that a weeeeee bit too seriously. One gets the sense that they just like having the domain and don't really care about the offers. Maybe he would if it's "high enough", sure, but much of this reads tongue-in-cheek.
https://en.wikipedia.org/wiki/List_of_most_expensive_domain_..., Beer.com sold for 7M in 2004.
The domain owner is getting tons of offers for their domain and its a waste of their time. Now, slap $10 million, make it large and visible. So everyone can just go away. It's strategically better to put some high value to filter out everyone.