although it is clunky and over-formal, there are technically no errors in pcpisces' text.
"I desire to collaborate with you" isn't something a native speaker would say, even if it is technically correct. The language is not merely "clunky and over-formal," it is fundamentally awkward and out of place.
your text, on the other hand, is riddled with elementary errors
"speaker's" instead of "speakers" is hardly "riddled." The fact that I can identify my mistakes when you allude to them so generally is also evidence that I actually know what I'm doing, unlike the people you claim I am attempting to impose my arbitration on.
If you actually want to get this nitpicky:
it's that you're the one taking umbrage and going on the attack about it.
Sentence fragment.
all the while,
Really awkward way to start a new sentence, as it refers to some other period of time as-yet unidentified. The fact that you never go on to identify this period of time makes it worse.
spelling which your position
Should be "that," not "which."
pronouns or plurals
Using plurals to refer to single instances is logically inconsistent, if not grammatically incorrect.
errors
Ditto.
, but ultimately,
Technically, you're not supposed to start a clause with "but," and the comma after "ultimately" is incorrect.
but you
Definitely not supposed to start a new sentence with "but."
pay, in
Comma incorrect.
See, I don't normally play this game because it isn't fun and it has no point. I don't tear apart the tiny mistakes that exist in everyone's posts. I do point out flagrant abuses of English when they are made by people trying to advertise their services as writers here. When sentences don't make sense or sound ridiculously contrived and unutterable by native speakers, I'll let the poster know that they shouldn't be charging money for their writing. You're the one making this an issue of "paranoia" and perfectionism.