I don't think the argument is that you must feel "honored". Just not personally affronted by it.
I work for a company that has open developer positions. None of them are related to keyboard firmware, but if you told me nothing about a potential candidate except that he'd been doing keyboard firmware for fun, my first instinct would be, "great! Let's see if he wants to come in for an interview". Don't we all spout the company line about how specific skills are less important than "passion" or whatever? Well, then don't bitch if someone contacts you about something other than the specific skills on your CV. You don't have prostrate yourself before their glorious presence, but I don't see a reason to get upset about it.
I work for a company that has open developer positions. None of them are related to keyboard firmware, but if you told me nothing about a potential candidate except that he'd been doing keyboard firmware for fun, my first instinct would be, "great! Let's see if he wants to come in for an interview". Don't we all spout the company line about how specific skills are less important than "passion" or whatever? Well, then don't bitch if someone contacts you about something other than the specific skills on your CV. You don't have prostrate yourself before their glorious presence, but I don't see a reason to get upset about it.