This is self-defeating logic. By tipping more, you are actually undermining the value of your own tip because people now think that is the new norm. Making your next tip worth less. The only way your tip is exceptional is if it is not normal.
Reality is, it's more akin to how 'internet myth' run than it is about 'standards'. Meaning, people publish things and promote them, and the more people say it, the more people believe it. Create an echo chamber, publish it, repeat, and keep repeating, and eventually people will repeat it themselves when it seems harmless enough.
It's funny how people will recognize the NRA as biased when giving opinions on guns... but think the Hotelier and Hospitiality trade groups are somehow great objective sources for customer behavior in the service industry.