I mainly refer to this bizarre explanation of how the op’s primary complaint could have been said better...
“Words themselves have no meaning. Words are merely collections of shapes (letters) that convey meaning only because we give them meaning. However, communication would not work if we just threw words together. We have invented classes of words that have different uses - verbs communicate actions, nouns communicate things, adjectives describe features of a particular "thing", etc. We've gone even further, however, and come to a mutual understanding as society over thousands of years that words are not just used to define their definition, but that words convey tone as well. As an example, the two following messages convey a very different tone, even though the message is the same:
Shall I compare thee to a summer's day? Thou art more lovely and more temperate.
versus
You're hot and pretty, but tempered and enjoyable.
One sounds very eloquent, very "flowing", and very complimentary. The other, while conveying the same message, sounds businesslike, cold, and forced.
Likewise, while the words were "do yall speak any english", there are multiple things that cause it to have a negative, racist tone. The use of the word "any" here is unnecessary. The use of that word implies two things - that they do not speak any english (else it would be unnecessary to put that in), as well as that the fact they don't speak it is bad. Think of it like this - when someone in real life says "could you be ANY more annoying", they're not really asking you could you be annoying - they're telling you that you're being annoying. That is the tone of that message. If that was not the intended tone, then the OP should choose their words more carefully next time.
The other message which says "if only... actually spoke..." is two more phrases with a very negative connotation. Even the phrase you "literally" translated it into (hint: you misused the word literally there) is negative - "i wish i could" in this instance is a defeatist, negative, and frankly "calling out" type phrase.
If the OP had said "I can't understand what you're saying" there would be no problem. The OP did so by belittling the language they were speaking at multiple instances, then getting into an argument the entire game over it. Not acceptable, period.”