I'm in your side
In yaoi chan you can find ones without watermark, in Russian though.
or wait for another week to buy volume digitally from Sublime.
Fired? As in you think someone is actually paid to do that? You do realize that what you are looking at is a fan-translated scan of the original manga, right? Someone bought a copy of the real thing, scanned it--which is illegal, and then someone translated it. The watermarks were placed on it to discourage distribution on social media sites. (You can see how well that works.)
If the watermarks bother you that much, the simple solution is to buy your own copy, which will not only be watermark free but will also support the mangaka and the manga industry.
I'm speechless O^O
Point to buy your own still stands.

Whoever is in charge of these watermarks should be fired.