Not read the full thread...
I'm ex cabin crew, worked long and short haul, not low cost.
When I first interviewed I was weighed and had my measurements taken on the first part of the recruitment day. I also sat exams in English, maths snd general knowledge followed by team work exercises and a then 3:1 interview. A bit like x factor with people being cut out during the process. I have worked for more than one airline including a flag carrier and the process was similar.
In the 2000's most airlines stopped weighing at interview in the UK and used wording like "weight in proportion to height".
During the initial training course we had to have time on grooming and were shown the best way to wear our hair and make up. I had exams on uniform standards which included things like which hand to hold your handbag in, when to wear my hat, allowed nail varnish colours and what size heel was allowed in the cabin and for dress shoes (we had higher heels to walk through the airport then changed into a lower/ cabin heel for the flight). I believe many airlines now don't do this and just allow low heels the whole duty.
I've spoken about this with friends who still fly and they agree standards have dropped, mainly because of cost and because of woke/ body confidence culture and inclusivity. Low cost airlines have also influenced other airlines and contributed to the drop in standards. However, many crew do take a natural pride in their appearance.
To address some points I skimmed across:-
Most new crew are educated to degree level.
Cabin crew shouldn't be putting heavy bags in lockers. If it's too heavy for the pax, it's too heavy for the crew and it goes into the hold.
Crew are on board primarily for safety and not to be a waitress. They are trained in advanced first aid, all of the safety equipment on board and various other procedures. In an emergency they act as every emergency service until fire/police/ ambulance etc services can take over. Customer service is secondary.
Not all long haul trips are bullets, I've been three week trips abroad and had week stays working the flight out and the flight home with paid days off between.