I don’t think the reason men’s crew isn’t an NCAA sport has anything to do with Title IX or trying to keep the number of women’s scholarships equal/equitable with the men’s. The association just wants to maintain control of their competitions. The women accepted the NCAA control in exchange for the huge number of scholarships schools were willing to offer the women rowers.
Who are schools reporting Title IX compliance to with non-NCAA sports? A school could give merit or need based scholarships to every member of the men’s crew and that wouldn’t be an NCAA violation. Title IX might care, but the NCAA doesn’t. Do they have to include club sports that use school facilities or receive some school support to show proportionate aid? Club sports are sometimes organized and run through the recreation department, not the athletic department, so the athletic department can’t be held responsible if they offer 30 men’s club teams and only 5 for women. They use school facilities, equipment, automobiles. At many schools, the club sports are pretty organized, have uniforms (with school name) and facilities provided by the school, and there is a very organized tournament for a championship.