We don't speak your way of English it's called dialect.
I don't have a problem (for the most part) with the pronunciation that you use. A large number of the words that are used incorrectly are often just spelt wrong, for the entire sake of laziness.
Why do people honestly get mad at this? "We speak correct English hurr durr" well English originated in Germany and you guys don't speak it the way the Germans did so forget off with your corrupt version.
This is an exceedingly poor simplification of the history of English.
The English language is derived from over 2000 years of mixture of various different languages, including Germanic languages, Celtic, a very large dependency on Latin and Medieval French, and also on Greek.
The Germans never spoke English. They spoke German, or the various sub-languages which used to make up the regionalised areas of what is now modern day Germany.
English is from England, and it is the language of the English people.
The take on it that the people of the USA have is a corruption of the English language. It is directly derived from the well-established English language.
It stems primarily from differences made when the Webster Dictionary was first published in America.
In fact you don't even speak it anywhere close to how you originally spoke it, it's called evolution.
I don't deny the fact that there is evolution of language, and it is a good thing.
The problem is that there are two conflicting evolutions of the same language, both called English.
While the two are primarily identical, there are key differences, which for the most part come about from a laziness in pronunciation and linguistics of the American People.
We have evolved the English language to fit us and you evolve it to fit you. Although I'd argue American English makes the most sense we take out a lot of unnecessary letters to optimize it
The "optimisation" of the American version of English is nothing more than removing letters for the sake of making it easier to write.
There are countless examples where Americanisations change a word out of laziness.
The removal of "U" in many words, most famously in "colour", is for a lazy reason. You remove the U, yet make no difference in pronunciation. It's nonsensical to remove it for no reason other than "It's shorter now".
It removes the history of the linguistics too. The reasoning behind "our" in words is that it's an Anglo-French connection, relating to the Old French suffix's, following the Norman conquest of Anglo-Saxon Britain. This is the creation of the English language.
It's the same with the swapping of the suffix "-re" with "-er" in America.
Words like Centre become Center. The pronunciation is the same, yet you change it around just for the sake of changing it.
Again removing the connection it has to it's roots, coming from French, Latin and Greek.
Another that you just change for what appears to be lack of intelligence, is "Sulphur" to "Sulfur". It's as if you are completely appauled and detered from using 2 letters where you could lazilly just use 1.
And then there are places where you just ignore logical spelling and go for something entirely different.
Aliminium becomes "Aliminum".
Traditionally, the discoverer of Aluminium wanted to name it "Alumium", but then changed to "Aluminum".
The rest of the world decided "Aliminium" worked best, since it fit in with the same naming conventions as other metals, but the Americans decided they were against that and adopt the easiest style, and now sound like complete idiots when they pronounce it.
and we also don't randomly make letters silent in words, whenever I hear people with really thick British English they make like half the consonants silent "ello ave u seen my new cah" like wtf is the point of the h and the r if you're not even going to use them?
I'd first have to ask what you're describing as thick "British", because from the sounds of it, you're listening to someone with an accent.
And the thing about accents is that they vary from place to place and take slight differences to how they pronounce things.
And as to any one in Britain who does pronounce words with half the consonants, they are equally dim-witted and lazy. There are British accents that I can't stand for their lack of pronunciation.