Give the drama and faux outrage a rest🙄
This thread is poking fun at people walking around in their pajamas as afashion choice, not because they are physically unable to dress themselves.
Gallapentin has already given a great response to this, but as for me, there's no faux outrage at all.
It's annoying enough when people consider themselves to be the random arbiters of what is or isn't acceptable in scenarios like this, when it doesn't actually matter at all and when other people have just as much right as they do to choose how they dress. It reminds me of the bullies at school who will harass the kids who aren't wearing Nike trainers, but instead have a perfectly fine equivalent brand.
Maybe some of these snobs would be happier only going to exclusive hotels that poor people can't afford, where everybody is free to enjoy spending their time judging each other for using their cutlery in the wrong order, cutting their bread rolls instead of tearing them or passing the salt the wrong way around the table; whilst the ordinary 'common' folk can just get on with enjoying their leisure time in a positive way without needless ceremony.
I don't disagree with you that most of these people probably are not disabled; however, they clearly have a preferred way of dressing for themselves that differs from your preferred way of dressing yourself. They've paid to enjoy their stay in a hotel, just like you have, and aren't giving strangers like you a second thought.
That said, the fact you are sneering at these people - whether they are disabled or not - and comparing them to people who are disabled, people who live in care homes and such - really does betray your prejudices. You treat these people and their lives as nothing more than a cheap joke about how 'pathetic' you clearly see them - and then criticise those of us standing up for them?
By all means start your own establishment with strict rules or membership lists, but please do remember that disabled and other vulnerable people's lives matter too; they really aren't deliberately living in often very challenging and distressing circumstances purely to annoy you.