Disagree entirely.
I'm 6' and I weighed 120lbs when I graduated high school. From age 18-28 I put on 65lbs naturally. At that point I was peaked.
Everyone starts at a different point and peaks out at different weights depending on their genetics.
Personally, I haven't heard of many people on this forum that have put on 65lbs naturally from age 18-28. So I think I did ok.