Men’s crew is not an NCAA sport because the men choose not to make it one. It’s been that way since long before Title IX. It could become an NCAA sport and limit the number of scholarships to 5 and not disrupt the Title IX balance that much. NCAA does all kinds of things like have more women’s gymnastics scholarships than men’s (and women’s are a headcount sport).
D’s school has both men’s and women’s crew, and the women have NCAA scholarships while the men just have school scholarships for crew. Since the athletic director is the men’s coach and it was the first team the school had, it is a well funded and well supported team. Title IX only requires that the percentage of men’s to women’s sports and the scholarships be proportional to the ratios at the school, so at D’s school (75men/25 women ratio ), the men’s teams do have a lot more money to spend on the male sports. They also have a lot of international athletes (crew, soccer, baseball, golf).