It's not a misrepresentation. These parts require preparation for installation. If you don't know that, then you don't know much about modifying cars.
If a part doesn't meet your expectations, you can have an opinion of that. You can even come here and voice that opinion. You could ask for input: is this normal, is this what others have experienced, should I be worried, etc. Before or after that, you should ask for satisfactory resolution.
Instead, this charlatan comes to this forum disparaging the product and seller. This experienced BMW modder doesn't give the seller a chance to provide satisfactory resolution. They continue to disparage the product and seller, doing so after resolution was offered and accepted.
A little bit of sleuthing by others found a person with the same screen name has expressed similar opinions of various products on other forums. Now I don't know what was posted, what the rules are of those various forums or that there might be a conspiracy against the OP even if it's the same person, but it is a little odd.
Then the OP says:
Same everywhere, calling out sponsors who get protected because the forum gets money from them, even though they sell subpar products.
The seller is not a vendor and the forum doesn't get money from them. They don't sell subpar products. They sold a product that didn't meet a buyer's expectations. It happens and it's unfortunate. The seller offered satisfactory resolution and it was accepted by the buyer. The buyer is displeased by the timetable the resolution is working on. That is unfortunate as well.
Factual representation of events and occurrences with any product is welcome and desirable. Discussion about the products and services received, even opinions, are also welcome and desirable. There is a difference between opinion and a vendetta. A vendetta is exactly what this is. It does a disservice to the seller and forum members.