It of course sucks for those who invested their time in hacking the Oracle stack, but I think many people these days outside the Oracle bubble see Oracle as a dead-end.
Most people don't have a war chest full of money to hire the best lawyers like Google to protect them against baseless lawsuits.
Anyway, even from a technical point of view, things like Graal and Truffle are terrible workarounds and I prefer just fixing the things which are broken in the first place. Seeing that this will never happen at Oracle, I'll just work on code were the maintainer/owners are not so openly hostile.
What we can and should say is that Oracle is losing the trust of the Silicon Valley startup crows, and that this is a very important population segment. It's like a candidate being elected but gradually losing the young vote – it's a bad sign that Oracle would do well to consider.