Beside the obvious of the increase in the price of admission it seems like the quality has gone down. I mean it's not the beauty of the the girl but of the "service" or her "Do list". Reliability is more of an issue, will she show up, cancel or be 1 or more hours late? You'll still have the occasional upsell but now it seems there's more of it, so you really need to do your homework, more than before.
The ladies who've been in the Vegas scene are still one of the best, anywhere. It's the new girls who come in for a few days, see a few clients then they're gone. They"re not looking to build that repeat base nor do they care. To them, it's easy money for 3-4 days.I sense some of the ladies are taking the client more for granted now.
But, if you connect all the dots, and do the necessary follow then Vegas can still be a great place to ......have a good time

I used to go to Vegas  once or twice a month, usually see the same few girls. With Covid most are gone. I have gone probably 6 times since April and let's just say that I had a few great encounters and the rest completely sucked.. including dates canceling after confirmation the same day which caused me to fly out, spend $$$ in the room and just watch tv. Rated have gone up for most part....but is there a difference between $600 and 1k as far as look, service etc? Probably not.. Service have gone down.. girls used to stay after sex, talk and leave when the hour was up.. I had girl leave after 35 min..I am not saying you cannot have fun in Vegas. I am sure there are plenty of great girls still.. but for me, it comes down to cost.. the flight, the hotel, the fees to take the chance of a no show or subpar service... for all of these reasons, I will go less often and stick to known friends when they are available.

Vegas has become a sellers market I think.  There are more clients than high end providers.  Naturally prices go up, service can come down without retribution.  If a provider gets a better offer last minute, they can cancel without worrying about "if I do this too much, will I run out of customers?"

It's the same at the tables.  Almost all the tables I found, regardless of time or day, were $25 tables and higher.  Again, there are more gamblers than tables so, it's a sellers market.

And same with the hotels.  Lots of customers, and not as many employees, so the service in hotels has gone WAY down.

Of course these are all generalities.  There are still some great experiences to be had there.  You just have to work harder and spend more on average to enjoy them.