I think its a little silly to say that someone who goes on at least 8 dates and speaks to each other on the phone while engaged knows their chasson the same as someone who’s met their chosson for 20 minutes. That’s total baloney.
Litvish parents do just as much research as their chassidish counterparts. I think its just the way you’re brought up that helps you adjust to knowing the guy for 20 minutes or knowing him for 8 dates before you get engaged.
Btw, workaholic- if you’re feeling uneasy- definitely ask for either a phonecall or another sit in.