Why do that ? If they can withdraw your funds from a sidechain using M6 there is no need to also mine the hash, or even be a miner. You have still not answerd the question.

You've basicly just said miners can hack your sidechain account/ wallet and withdraw the money. But this ability has nothing to do with them being miners. It's like saying your internet provider can hack your email delete your emails, or assign all of them to a new address. There are several privacy and safety barriers between that happening.

What you have done is actually started reading the Bip and its description so i encourage you to keep reading about it, but what you've claimed up to now remains unfounded and groundless.