Are can lights really that bad?
I’ve seen the articles extolling the evilness of can lights and I can’t argue the old ones are really bad. But, would an airtight LED leak very much air? With an attic above you could pile a little extra cellulose above it to compensate for the 2-4″ you lose for the light. Most of the articles use the old lights as an example but don’t quantify how bad a modern airtight one would be.