The worst things you can say about Scientific Reports are it doesn't have the same novelty/impact requirements as many journals* and people like to over-emphasize the "Nature" part of the name in a pointles grab for journal prestige. Journals in general can be pretty shady on a case-by-case basis. See "Nano Chopsticks" published in Nano Letters for a good materials science example of straight garbage (laughably obvious image manipulation) getting published in a fancy journal.

*Not really a problem if you correctly believe science should be more than publishing sexy results.