Are the older campers a whole lot lighter than newer ones?

I got my first cabover truck camper over 30 years ago (it was well-used, even when I bought it) and hauled it on a '71 Chevy K10 longbed. I did put a pair off add-a-leafs in the rear, but I did no other truck modifications of any kind, and never had any issues with handling, power, or anything else.

I don't remember much about that camper, but it had to have been a bunch lighter than my current one.