Disappointed at the incomplete end, but really weirded out at the entitlement complex of people ripping into the dev. If you download a jerkoff game for free, you don't really have a soapbox to stand on.
Why can't people finally learn that whether you paid for something or not, has nothing to do with valid and reasonable criticism?
We are not talking about people crying for a reimbursement or some form of punishment, just expressing disappointment.
Entitlement is a problem for some, sure, but at the same time many people dismiss any form of criticism as entitlement, no matter how thin the ground for that kind of argumentation is.
Where does it say that pointing out flaws or decisions you don't agree with is entitlement, just because you didn't pay any money?
You invested time and thoughts and (maybe) also emotions into something, then you can have an opinion on it.
Firefox is free, but should we not point out flaws and errors in the browser, because we don't pay for it?
And that goes for every piece of freeware, free online comics, free youtube channels etc..
It's simple a logical fallacy to draw any connection between people having a right to an opinion and payment.
One has nothing to do with the other.
Now, whether you or the creator value that criticism is completely up to you and them, but payment or not, does not decide the validity of criticism. Whether the criticism is on target or not decides how valid it is.