I just learned about BIP85 today. It will generate a new seed that I don't need to back up.
I think it is pretty cool to only have to backup my one BIP39 seed and the index of BIP85.
However I started to think that this BIP85 can be used for something malicious. A wallet developer can make a wallet to generate a BIP85 seed from that wallet developer's BIP39 seed. So I wonder how can I verify the seeds that I got from some wallet software/hardware are not a BIP85 seed?