. yobit exchange has been known as a scammer
Actually they are not known to be scammers as far as I know. Not scamming anybody directly at least. If you consider promoting shittokens as scamming then yes they are scamming people but so are every shitcoin promoter under the altcoins subforum.
Are they shady? Probably more than the others but I still wouldn't call them full scammers.