So listen to the rest of the album and find out. It's more like Pink Floyd meets a cleaner Mastodon.
It's doom with a touch of prog and some southern rock, and it's way catchier than a lot of Mastodon's stuff. If you wanna be nit-picky and "rompipalle" (which I completely understand...it's good to be discerning), that's fine, but you'll be doing yourself a serious disservice if you blow this off as a "Mastodon tribute band". This album is as good if not better than Mastodon's last two albums; the vocals are better, the hooks are better, and the riffs are better (this is subjective, as I tend to lean towards doom rather than prog). It does go off on some very Pink Floyd-ish tangents here and there, but there are quite a few great surprises that come out of nowhere, such as the bridge riff in Pyre for the Red Sage.
This is an older video from their last album, but you can see they're very much their own band. This song is inferior to every song on the new album, just to clarify.