I have regularly called groups of females "you guys" since childhood. It's extremely neutral in a lot of the country.
verdigris
NTFS drives can be used by both Windows and Linux (you might need to install a driver for the latter but most user-friendly distros include them out of the box). So yes, if you have storage drives you'll still be able to access them from both sides.
There can be weird issues sometimes with this setup, usually as a result of Windows freaking out because Linux modified some file, but it's rarely anything severe. Personally I just flipped all my drives to Linux filesystems because they're nicer for several purposes and I am actively trying to avoid ever using Windows again at this point.
There's a third party alternative to the Epic launcher called Heroic, works pretty great. Also apparently Roblox works with something called "Sober" -- no idea what that is just regurgitating other comments.
Usually the bootloader is only on one drive regardless. Keeping them on separate physical drives can be nice for simplicity but there's no reason you can't put them on the same drive.
Check all the games on ProtonDB, but from what you listed that should all be pretty easy to get working on Linux. 95% of Steam games just work out of the box, with most exceptions being competitive MP games with aggressive anti-cheat. If it's not a steam game, it's still likely pretty easy to run, but you might have to use a third party launcher or something depending on what storefront it's from.
That's what makes software legacy; it falls out of popularity. Plenty of terminal applications have barely changed since the 80s, but they're not "legacy" because they're actively used and maintained.
If you never played Magicka you should give it a shot.
Needs more UFO50, it's like the dream game for the steam deck.
They're trained to return to their home roost. It's just a flock of white homing pigeons.
Are you just taking about the 1mb? If so I'd just leave it, it's common to leave some buffer space at the start and/or end of a block device.
The US. And yes, I will continue to use the phrase "you guys" because it's a phrase that means "you people". I can't anticipate every illogical thing that will offend people. If someone called me out on it in person I would try not to use the phrase to address them specifically but I would also think they were being very silly.