You might find it short sighted, but that does not mean that people shouldn't have a choice.

I get offers for my domains, all unwanted.

If I at some point decide to sell one of those to one of them, all the cold approaches from the past don't suddenly get legitimized.

edit: as I'm writing this, I remember that this is quite similar to the selling of social media IDs. Some random crypto start up decided that they should try to bully me to sell them my three letter Twitter handle. Really annoying.