Crosmando: What "agreement"
The agreement wherein gog enters into a contract with the publisher (who happens to also be the dev in this case), and gog agrees to package and promote the game, on the the assumption that it can get enough money from sales to cover its own expenses before the erratic publisher decides to pull the game. I'm pretty sure there is more than $20 involved in such a deal. Given that the current retail price appears to be $10, $3 of revenue will require a lot of sales to cover expenses. Assuming that it remains at $3.
Who cares?
I would certainly hope that gog cares, since it affects their bottom line, as well as the potential treatment of gog customers after the sale.
There's plenty of developers out there who are pretty weird, eccentric or whatever, it has nothing to do with the quality or lack thereof of their games.
However, it does affect the quality, or lack thereof, of after-sale support for customers. In this case, you get the double-whammy of a developer
and a publisher who treats gog as an afterthought. "gog needs me more than I need them". See the "games that treat gog customers as second-class citizens" thread for a list of other publishers and developers who apparently agree with that sentiment.
The entire political side of the argument is a strawman, and doesn't deserve any further reply.
DTravel: Personally I don't think GOG should carry Grimoire because the game isn't finished yet. Cleve is still mucking about with major parts of it and apparently the recently released manual is basically useless and flat out wrong in many areas.
So, like pretty much every new game these days? I think your previous paragraph was a better reason.