You said donations and gift are synonymns right? That means that the words can interchange and keep the sentence the same.
But they have different definitions than each other. They can be interchanged between each other, but there's certain definitions that voids the other.
Because Tezuni's server gives benefits for donating, donations cannot be considered gifts because gifts are contributions without compensation. If there were no benefits to donating, then it could be also considered a gift to Tezuni's server.
"Donation" is a better fitting term considering each donation contributes funding towards the server, and not a gift
for Tezuni. If what he says it true, all donations go right back into the server.
The definition of gift is to give someone something without expecting anything in return so by your own logic no, Tezuni doesn't have donations.
Notice how "Gift" and "Donation" have similar definitions, but don't share two definitions? That's because there is a difference between a gift and a donation. Since you were making a big stink about whether or not I read your citation, I'm going to now tell you to re-read it since you missed something important.