This is basically how I do my coin flips. Not kidding.
Discussion
High entropy is not enough, you also need anonymity.
That's why you can't trust a hardware wallet to generate a random key, it could produce something that looks random, checks out to be random, but was actually predetermined.
Well, hopefully you're flipping coins via the blockchain for something non-sensitive.
I'm talking about coinflips of the sort of "should I wear my black t-shirt or the white one" not generating seed phrases lol