Your only real issue with dl is not comping your guests into the club in Boston which kind of seems a little unreasonable to be annoyed about

but change all you want all airlines have good days and bad days and in all honesty dl is one of the better airlines and while a 100,000 seems like a lot to you if they sell those seats even without your business they aren’t actually out much of anything, the big mistake dl made was trying to help you instead of sending you to deal with af who had the responsibility here