MetalPlanetMusic.com is a music and photography news site that has been running since 2018. For a site in this space, that kind of history is a solid indicator of legitimacy – most fly-by-night music blogs don't last a year, let alone eight. The operator provides an about page, contact information, and links to social media, which is more transparency than many similar sites offer.
What should you watch for? The site loads a high number of external scripts and has some hidden content on the page. That's not unusual for a WordPress site running ads and analytics, but it does mean you're sharing data with third parties. If you're just reading articles, there's little risk – but if you're signing up for a newsletter, check that the site clearly explains how your email will be used. Overall, metalplanetmusic.com reviews and content appear genuine, and there's no evidence that it's a scam. It's a trustworthy source for music news, with the caveat that it could tighten up its technical setup.