In that case you have to choose trust able or well known exchange for your trade. It's not new that shady exchanges provide false traffic volume. And it's also truth that there are no specific solution for that besides ignoring them. Since 2017 we are facing tons of shit exchanges and it's not going to stop. So it's a better idea to be careful our self before choose exchange for our trade.
This decision will make it easier for you to use only known exchange. We have many exchange now that have a fake volume And you can't blame them because that's also the way to exchange to have more user's registered in this exchange.
It wil not work always but they are actually persons registered in that exchange when they see it on the top volume exchange.
I can understand you opinion. But all though for their fake volume they register fake people with doing so called airdrop. I saw many people take that chance and use it wrong way, like make hundreds of referral alone which are all fakes. So i can't agree with that those are actual register besides bot. And if i'm not wrong then i think only register quantity don't carry a fake volume. So doesn't matter why it's happening by them it's not worth it.