Thread title: "Wanted: More Thrash metal!
He's not asking for Death Metal and pseudo Melodic Death Metal bands like Maze Of Torment and The Crown. Not that they're bad bands, but they're not Thrash Metal, which is what he requested. He also listed Metallica and Megadeth, with whom Vio-Lence and Artillery fit nicely.
Lastly, it doesn't matter if those bands are thrash metal to you, as that has no bearing as to whether or not they actually are thrash metal. They've had Thrashy moments, but so do a lot of bands, and that doesn't make them Thrash Metal, so listing them as a Thrash Metal recommendation doesn't make senes. Don't take it personally, just know what you're talking about.