Well multiple posters are dead wrong regarding D3 lacrosse.
Not exactly sure what your point is. However it clearly is as rigorous maybe more so inasmuch as many athletes take full loads. Ask the athletes at RIT, Tufts, denison, kenyon, wooster, ohio weselyn, gettysburg, williams, amherst, middlebury, weselyn, dickinson, haverford, washington & lee, franklin & marshall, oberlin, stevens, & so many more about the demands & rigors of their programs. As I have noted, I had son in D1 & a gandson in D3, & know many players from each level. If you & others want to persist in your beliefs, please do so. There is clearly nothing I can say to persuade or inform you.