Just checked the patch on switch to see if the Oil Ocean boss was indeed fixed. While the rings don't get stuck in the oil like someone said before, they made the boss battle just way easier than it was before. It only shoots the laser two times before the Eggman pops up (even tho the lasers weren't really the problem in the first place) and during the attack Eggman part the turrets seem to shoot in a pattern that makes it real hard to get hit by them. I probably preferred it if they made the rings more recoverable instead of making the whole boss battle easier since the boss itself wasn't actually hard in the first place, the primarily problem was it could get cheap shots on you while being stuck in oil and thus being often unable to recover a single ring.
But yeah, the turrets don't shoot towards you at all anymore, so at least the main problem with the boss got fixed. Perhaps a bit over-nerved, but at least he won't be ruining any runs anymore. Grabbed the dlc after confirming the boss change, looking forward to loving this game again.