Yes, my impression is that 7digital does the absolute minimum. This is the case with basically all streaming services that try to compete with Spotify. I've tried all the big ones except Tidal, which has its own problems for which I refuse to touch it.
Want an example? Here's Deezer:
https://www.deezer.com/search/%22Arrows%20in%20the%20Gale%22...
Here's 7digital:
https://no.7digital.com/search?q=Arrows%20in%20the%20Gale
I probably can't post more links without getting auto-hidden by HN, but just try the search elsewhere too. Also try the album titles "Fresh Fruit", "I'm Looking for an Angel", "Day Dawn" or "My Car Sounds".
That is one spammer. He releases 300+ albums at once, several times per months, to virtually all streaming services. They all have the same title, and the same generic album art, often a filtered stock image. They're officially "compilation albums". He has been doing this for about a decade as far as I can tell. He uses a different made-up label each time. If you blindly search up any song by one of the classic artists he targets, likely you will get one of his "compilations", and he will get money for every play.
But Spotify is different. Those Echo Nest people have a special hatred of spammers, they kicked him out ages ago.