Here is some free software that accomplishes the same task, which is almost surely not more likely to give your password to third parties than just typing it on the same machine would:
echo $(shuf --random-source=/dev/urandom -n 6 /usr/share/dict/words)
Not to mention it's awesome that an 11 year old girl is dabbling in cryptography already.
I pay $2 for lemonade at a lemonade stand. It's not because I'm thirsty, and I'm most assuredly not going to comment about how it's an absurdly bad business because Wawa has 40oz drinks for half the price.
Edit: sometimes I am legitimately thirsty.
That's a fairly damning outlook you have on "most HNers".
If no - that's a wrong kind of education we have here.
Athough, if customers receive a package with "here's your password, but don't ever use it - see, it was compromised; take this dice instead, check its fairness and generate your own password!" then it's great.