No I don't like it because it doesn't add much new knowledge to the debate about the serotonin hypothesis. And yeah it would be great if scientist didn't had to publish results for the sake of it. Especially in medical sciences meta studies are super popular cause you can do them with library article login and spreadsheets, which end up in a lot of articles with strong conclusions on a mismatch of data. Meta review definitely have their place but they are as far removed from the clinical reality as can be.