This band was rejected for being 'more punk' but if you listen to the whole demo you will find out that most off their riffs are pure thrash in the style of toxic holocaust
So I would like a second opinion if you don't mind
(Also I know a guy from this band and they totally consider their music as metal)
https://youtu.be/e9zWTsSCCDM

There are some thrash elements in their music, but not not enough to make them acceptable.
(Also the band calling themselves metal isn't a criteria we check for when checking bands)