A few comments:
My S was shy in HS and I thought a LAC would be perfect for him. But when we visited a LAC he felt it was just too small and that “everyone would know everyone else’s business”. I think what he really wanted to say was that there might not be enough space if he wanted to fade into the background for a bit. He ended up feeling most comfortable at mid-sized universities – we found a group of schools that had small class sizes and about 5,000 or so students - and he really thrived in that college environment. Not saying a LAC isn’t best for your S but let him look at some different schools (if possible with the pandemic) and listen to what he tells you.
FWIW my more outgoing D loved the close-knit feeling of LACs and thrived at one.
Also one of my D’s friends went to Hamilton to study Japanese and had a great expereince there.