You quoted one aspect of my post where I was giving reasons other developers might abandon their games and showing why it does not seem that the folks behind Desert Stalker would abandon their game. So what you quoted and said made little sense to the point I was making.
But yes, you are correct. If you're putting money into their patreon and don't feel you're getting what you deserve, by all means, it's up to you whether you want to consider doing so.
It does seem that folks forget the point behind Patreon, though. From Patreon's about page:
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The key being, "fans pay their favorite creator a monthly amount of their choice in exchange for exclusive access, extra content, or a closer look into their creative journey." and "fans get to rest easy knowing that their money goes directly towards creating more of what they love".
So far, Desert Stalker patrons are still receiving all these benefits. If you want a finished product, wait and buy it on Steam.