Earlier quoted context omitted.
Not exactly. If you ask "do you understand ?" and "will you do it?" they will tell you yes as well. It's not a verbal tick. It's just not socially acceptable to say no.
I wonder if western culture has similiar quirks that we don't even realise.
“Good”
Tons of people have this exchange out of politeness. The person asking “How are you?” doesn’t really want to know details. The person answering is expected to be brief and positive. It’s only among friends that the same question is expected to get an honest and detailed answer.