“I don’t know of a single Litvish godol in the world that ever said not to get married at 18. If you know of any please advise who.”
” Chazal have harsh words for someone unmarried by age 21. ”
The above are interesting statements that carry no weight.
After some research, here are some facts:
Age of Litvish Godol at his marriage:
Brisker Rov : 24
Rav Aharon Kotler: 22
Steipler Gaon: 28
Rav Schach: 26
Rav Moshe Feinstein: 27
Rav Chaim Kaniefsky: 24