Yeah. Unless they've some ulterior motive for porting their RE engine to iOS, then this is insane. That kind of cash will barely fund a senior engineer for a month once you've paid out overheads as well.
If they're planning to have some kind of phone tie-in to the next Resi game, then maybe it might have made sense to work the compatibility issues out. An app that runs on your phone that makes it "your phone in game", so you can receive texts from the president's daughter while shooting some definitely-not-Spaniards on your Playstation, bit of an augmented-reality thing. Could be a laugh to have your phone be in control of a drone so that you can see round corners, while juggling the other things you're doing? But probably mostly so that you can get dinged for microtransactions.
Yes, because it doesn't do as much to protect you from data corruption.
If you have a use case where a barely-measurable increase in speed is essential, but not so essential that you wouldn't just pay for more RAM to keep it in cache, and also it doesn't matter if you get the wrong answer because you've not noticed the disk is failing, and you can afford to lose everything in the case of a power cut, then sure, use a legacy filesystem. Otherwise, use a modern one.