I can't stand the dialect(s) that use th-fronting. It makes them sound retarded. "It's my birfday!"
Those sentences do not mean the same thing. American English is simpler since you basically use the past simple for everything. Word economy is a scourge, you Americans do it constantly. It's so annoying when I listen to someone from the States saying "gotta" "kinda" "outta" all the time. British people do not use those ones that often.
Don't really see why you think the "US version" is better or easier to understand than the "UK version".
"I have been working in education for years." - Implies that you have worked in education for a long time, and that you still do.
"I worked in education for years." - Implies that you worked in education for a long time, but don't now.
Change that to "I've worked" or "I have worked" and they are much closer in meaning.
Speciation Is Gradual
Not a fan myself. I was stationed in Germany a few decades ago and would often take good ol Ryanair to various places over Europe for super cheap and of course the UK was easy mode since they speak English so we ended up more often than not. I cannot tell you how many times I'd be at a pub with friends and some girls would come in with some bizarre voice that would act as repellent. On the whole though, it's a pretty shitty reason to dislike someone as its something they generally can't help.
I like them for the most part. When I was in London, there was this bus driver who seemed drunk or high and I couldn't understand a word he said.
This is what I think of when you say British accent
I find words being outright misused to be more baffling. Recently I've been informed that desert, and desert-type snacks are colloquially referred to as pudding, regardless whether or not the snack/desert is an actual pudding. Was one of the weirdest anecdotes I heard about the UK after some of my family went to visit relatives who live there.
The story went as follows: My cousins asked my younger sister if she wanted pudding, she declined, then the cousins went and got popsicles/ice pops from the freezer.
OT: I tend to like British accents, as long as they're still understandable. I don't know enough about accents in the UK to really differentiate between most accents (I have trouble hearing the difference between Scottish and and Irish accents).
Didn't think about it much after my 7th or 8th birthday. Before that I think it went as far as asking my mom why they talk different.