Apart PE being a joke and just helps airlines to maximise profits without delivering added value, commom sense should always prevail regarding people differently able or even elderly / children when it comes to protect premium cabins.

Other airlines, especially on narrowbodies, are being far too lenient and flying LA for ecample you will have people queuing and even sitting down in the "premium" cabin ​​​​​​. Aiirlines from the LH group are not better. Strangely (excellent) PR stands out making even an announcement regarding toilet use.

So we have the extremes, but in all cases vulnerable people deserve respect and attention. So the OP is rightly upset and I wish him / her the best to overcome a deadly desease.