I've never blamed the baggage handlers or coach drivers. They are just doing what they are told to do. Yes, I've blamed check-in staff who are, generally, notoriously bad with, I guess, very old computers/software, though I have had the occasional gem. I have also criticised the 25 minute queues at immigration, though not the staff themselves.
Yes, I have criticised the seemingly routine 3-7 hour delays with Jet2.
Unacceptable things should be criticised in the hope that improvements will be made.
Airport "Insiders" on this forum had the chance to say, yes, your criticism is valid but this is what the airport is planning to do about it. Instead I just got shot down in flames and effectively told not to complain.