Shinra tensei is not a magnetic force, it is a shinra obiki manipulating jutsu according to databook, it has 5 nature transformations and yin-yang release. TSB has all kekkei genkai and nature releases, so it'll of course eradicate shinra tensei. It doesn't have to necessarily chakra, it just has to have any of the nature releases which are trumped by the kekkei genkai and nature five releases of TSB.
Shinra tensei eradicated by TSB.