"It is up to the buyer to check that the info given is correct = if the seller says that item A will be suitable for B, the buyer needs to make sure it is so.  People in eBay going through the reports are not mechanics, they would have to take your word for it that the seller is wrong. 

if I see something reportable and report it I never look what happens.  It is usually items in wrong category, like when I am looking for art deco jewellery in antique section and get pages and pages of carp from China."

I fully understand the principle of Caveat Emptor - beware the buyer

I take exception when you point out to a seller that they are clearly in breach of eBay terms, or that an item is not what they think it is, and provide supporting information, and are ignored, or worse receive an abusive message or "get a life, what's it to you?  If you don't like it, don't bid"

That is NOT the attitude of a community member.  That's the attitude of a greedy one sided individual.

I personally have listed items on eBay and Gumtree (which I think I'm safe mentioning as it's owned by eBay) where I have been contacted and told my item isn't what I thought it was, and pulled it or changed the item description to take this into account.

Being given the opportunity to do the right thing and not doing anything about it is just greed ruling your roost.  That little voice in your head saying "it's ok to lie a little" or "it's not my problem if they don't read it carefully enough" or "well that's what I was told so I'll go with that"

It's like buying a car and being told that the smoke coming out the exhaust is a "factory feature" on that model, or saying "oh I've been told it's just valve stem seals" when they know fully well it's worse or they haven't been told that in the first place, it's just rubbish they roll out with every sale.  The person selling the thing knows that's utter crap but they justify the lie in their petty little heads.

You can say that eBay aren't responsible for what happens but at the end of the day they are making MONEY from it.  And from a commercial point of view, it's all about the volume of sales, even if people get ripped off or lied to.  All they need to do is be SEEN to be "doing something about it" and somehow that's ok.

If it's logistically impossible to do anything about it, if it just CAN'T be policed, well fine - then let's just accept it's a free for all, wild west style.