Limeys is rather old timey and nobody says it anymore, but everyone would know what it meant. ;) Nowadays we'd just say Brits. Though if the UK breaks up because of Brexit, that will probably change, too - speaking of evolving language! LOL There's a song called Honky Talk Blues, so maybe that's where that came from, too. LOL
Yeah, America has been the colonial bad guy since probably WWII, when Europe had to rebuild and America started playing World Police and tinkering in other countries' business. Well, we were involving ourselves in other countries' business before that (cough Philippines cough), but we were really just doing what a lot of other European countries were doing, basically FOMO catch up scrambling trying to be like Big Daddy UK; it wasn't until the empire started breaking up and Europe was a major warzone that we really took over as The One With All The Resources And Nobody To Stop Us. It never ceases to amaze me how many Americans are shocked, shocked I say about the whole Russia scandal, while I'm like - do you know what the US has been doing since the cold war? Especially in Latin America? READ A HISTORY BOOK. A real one, not a rah-rah 'Murica one.
Queer still means gays, but it also applies to the whole spectrum - gay, trans, nonbinary, bi, etc. A lot of us that fit more than one letter in the alphabet soup acronym like it because it's more like "I'm in the gender/orientation rainbow" generally without having to run through a list of "I'm gay, ace, and trans."
Yeah, I've seen people actually say that accessible parking was a privilege, usually as they park there without being disabled and ranting about it to justify themselves. But as you say, more often I see people getting attacked because people think they are doing that, when really they ARE disabled, they just don't fit that mental image of being in a wheelchair, or even being paralyzed in a wheelchair. Like I've seen memes making fun of people in wheelchairs as faking it because the person in the chair stood up to reach something on a high shelf at the store. Like, they think the only reason to be in a wheelchair is if you're paralyzed and unable to stand at all. Um. People have all sorts of reasons to be in wheelchairs. It means you can't walk all over creation under your own steam just then, not that you absolutely can't move your legs. Like some days a friend of mine with CP needs a chair, and some days she needs a crutch, and on really rare occasions (but only really for short, indoor distances) she can manage without if it's a good, low pain day. She's not faking it, that's just how CP works. That's how a lot of things work. I just wish people wouldn't jump to conclusions!