Another check that brings more questions than answers and starts wrong, asking for an email, and wanting access to the system's clipboard.
Your warning makes more than any sense:
Don't follow the process below, or if you do, don't blame me - I have never tried and I don't wish to try it:
Perhaps a check will soon appear that is a little more reliable.

Absolutely that’s why apart from the warning, I have also added a TL;DR.
In fact I was pretty much hesitant to talk about this method. It’s literally very risky and exposes your privacy.
The funny truth is that the best way to know the risk level of your coins is to stop caring about knowing it and ignore it.
But, I thought it was good to let people know about this method, because it exists and if someone ever tells you to do that, if my opinion matters, I should warn you not to do it without having second thoughts.