Well as an end user this is pretty much OK right, so long as you are aware of the deal? VC funded companies have subsidized and then abandoned a lot of useful OSS code over the years.
Whenever you encounter a VC backed open source project you know the rug pull will come eventually. It doesn't make the code they have written any less useful. If the tool is good enough then it will be forked and live on.
No, it's not ok. It fucks the whole market by subsidizing the growth with VC money. Either a big company will buy them, consolidating their power, or they will IPO and the VCs will cash out and let the public bear the cost. It fucks the customers who are not as well-informed about this as you are. In summary, it fucking sucks.
Whenever you encounter a VC backed open source project you know the rug pull will come eventually. It doesn't make the code they have written any less useful. If the tool is good enough then it will be forked and live on.