Please release this game on Steam! It'll get an instant purchase from me
This doesn't make any sense until the final version of the game is released.
1. The current builds will be hidden from most users, according to the store's rules for adult games.
2. And even if a couple of people buy the game for $10, it won't really help cover the development costs.
Therefore, not until the final version, when the game will no longer require financial support on Patreon for its development.
If Deimus had made a game using the classic Ren'Py approach—just text and images—it would have been feasible to publish on Steam long ago. But this game is practically a cartoon, so the usual strategy doesn't work.
As for accessibility due to Patreon blocking... The best option is to use the build of the game published here: although the plot is a bit behind the beta version, it has full localization and minimal bugs. But for some reason, everyone wants the beta version, with its bugs and broken localization :-)