I have tried to keep the Psyonix wikipedia article true to reality if you look at the change history but there are people working for Epic heavily whitewashing it and I didn't want to force (wiki) arbitration or cause a disturbance after the first couple edit/revert battles. The Rocket League one is even harder to keep true.
Basically, they said they were stealing the Mac and Linux Rocket League versions because they wanted to go full directx 10 instead of 9. But the fact that the PS3 is still a first class client running Directx 9 even today shows this is/was a lie. Epic lies quite a bit. In fact when they bought Psyonix they loudly announced there would be no changes, it'd stay rocket league. But of course that lie only lasted 6 months. And now they re-write the wiki pages to pretend it was always the plan.
Anyway, I didn't want a refund. I wanted to keep playing rocket league. And now I cannot play. That's wrong. They bricked my game. And everyone thinks that's A-OK. Just like when they'll brick your modem, or your fridge, or maybe your car. Frankly, having any software in a $thing is a huge risk these days given the status quo.