No it doesn't , I'll still use it for cryptocurrency list and info needs. Coinmarketcap also list possible scam and shitcoins so that's not a new thing and I think, it doesn't mean that they truly endorsed such site by putting the ads.
They only want to have monetization , the same with bitcointalk (check ads disclaimer on every first post).
Also, you'll see on their site's faq "We're not here to judge the merits of any cryptocurrency, but we provide the best tools for you to make your own conclusions."