~snip~
What I'm saying is, like was said in the quoted section. It is good to use different password for different platforms for security purposes but we shouldn't rely on our brains alone but take proper record and a secured password manager can help with this (mind you is not the only method in keeping passwords).
I would not agree with the way you wrote it, because it seems to me like a very frivolous suggestion - the only correct thing would be to say that you should never use the same password anywhere, and I would also emphasize that you should always remember not to use any simple passwords or those that an attacker could
"crack" if he has enough information about us. To clarify, if the attacker knows that you have children named Bob and Melinda, and if he knows their dates of birth, then he will definitely try to use a combination of those characters.
BTW, I think that the image from statista is outdated, as I don't believe that a password with only 11 lowercase characters + 1 uppercase would take only 300 years to get cracked by a malicious person nowadays. If that was the case, we could even think of writing our passwords down in a personal diary instead of anywhere online (much like our private keys or seeds).
~snip~
I checked with one of the tools that test passwords, and to brute force such combinations would only take 7 months. If you add only one number to that combination, that time increases to 6 years, and with two numbers to 57 years. Of course, the time can vary depending on how many resources someone would invest in trying to brute force a password.