The receiver, on the other hand, has the tough job of figuring out what we mean and then making changes to his/her life based on the few bits of info we give out.
If enough people give advice about saving time by drinking your meals, it's no longer weird.
Why do we poke people and ask them to change? It's mainly driven by FOMO. By giving advice to others to live their life like we live, we want to ensure that they're not living a superior life.
It's as if by tweeting, we're telling things to ourselves and hoping a fellow tribalist finds us so that we both can reinforce our views.
Now, it's everybody's business.
The GIVE ADVICE -> MOVE ON -> GIVE ADVICE pattern helps us feel smart and helpful.
Of course, the thread WAS unsolictied and I expect to benefit from it, one way or another. You'll most likely forget about it in an hour and move on, but that's OK.
Remember: giving advice is benefits oneself more than it benefits the other :)