Considering what it does, the consequent benefits to it being open source, and that there are already open source tools to do this out there, it does not seem like an unfair criticism.

Having it open source is undoubtedly better, however one can simply ask for the source as often people do. Snark just leads to people not bothering at all.

As the old expression goes, "open source is more than just source code".

Honestly --and I'm not trying to be snarky here-- in this case, I'm not sure I understand how "not bothering at all" would actually be worse. Maybe I don't understand something about the value.

There are people making comments asking for help on OSX so they might have a different opinion than you, but beyond that we also have to consider other members seeing these kinds of comments may decide not to bother. So yes, you don't care about this project, but you might care about other projects that may never see the light of day as a consequence.

Those people should:

    brew install sendemail
 

or

    brew install swacks

or just send up their local SMTP daemon as a delivery only daemon and then use simple mail or mailx to send messages.