Yeah, it annoys me intensely. I always talk about 'Cause and effect', this age-old concept for explaining the way the world works, and it f***ing... RUINS it, man.
There was a newspaper here, once, that must have had an automatic filter just like GAG does, and the front page, the big headline, featured a name like 'Ryan Gay', or something, a footballer, and it changed it to 'Ryan Homosexual.' LOLOLOL. And this was printed en masse.
It always catches me off guard too. Like, I reread my question/answer and think to myself, "WTF? Did I make that typo?" and then I realize that GAG changed it.
There have been other things, like I've said, "U" of Toronto (meaning university) and it's changed it to "You of Toronto", or I've been talking about math and used "r" are a variable, only to have it changed to "are". But at least those ones are kind of understandable.
Changing "cause" to "because" is stupid because "cause" is an actual word, in and of itself.
I also dislike that it forces me to use the American English version of words, like taking out the "u" in words like favour and neighbour.
"BTW" also gets converted into by the way which is super annoying because then it looses its "bee tee dubs" connotation. Imagine if "LOL" were converted into "laughing out loud"... Not the same effect, not by a long shot.
I hate all the word changing, I should be trusted enough to use the English language... And people who "tak liek dis" are NEVER going to be intelligible no matter how much you filter and fill in their speech.
This is just one of many many bugs in the system, which would be *trivial* to fix.
The fact that they aren't fixed, makes me think they don't have any developers working on the site, and only bring them in for major code changes. (Like implementing the whole super mods thing recently.)