I must be the only person who doesn’t have any real issues with BKK airport.
Sure there are sometimes long walks, but using Fast Track + hotel hospitality programme, its only the motorway traffic that causes the time from stepping off the aircraft to checking in at the Westin, longer than 1 hour.
Only complaint about the BA (now closed) QF and CX lounges, there is no view… but the food offerings and wine / whisky offerings are more than adequate.
As for the false smiles……. far nicer than grumpy faces and rudeness back in LHR..