I've said this a few times the crowd is a prop.
WWE don't NEED the revenue from the ticket sales and don't WANT to cater to the live audience or change their intentions based on the the whims of the audience.
WWE is aware that having large crowds in attendance makes the product
a) look popular, thereby making the product more saleable (to TV stations, advertisers, sponsors), whilst also encouraging others to watch - ie this is popular, it must be good, let me check it out.
And b) more exciting and engaging, for the viewer at home. The show is considered to be more exciting if there is an audience - especially one reacting to the show. This is evidenced by the drop in viewing figures without crowds despite the fact that most people were staying home with nowhere to go during the pandemic lockdowns.
The crowd has a use, but since the company doesn't respect the audience beyond using it as a visual prop to make the show more appealing for people watching at home, or sponsors, they don't want to either be at the whims of the audience and their reactions or cater to them.
That's why live, they have someone walk down to the ring, do their entrance, and then have them stand there doing nothing whilst the TV show airs promos, commercials, skits, and recaps, all the while the live audience watches a wrestler standing in dim light doing nothing for minutes on end. Because the show is not for them. Its for the viewer at home.
And because of that, WWE have realised that they can just pump in the reactions they want. Because it doesn't matter what the audience in attendance thinks, it only matters that they sound like they are booing and cheering at the right time for the people at home, whilst filling up the seats in the places on camera.
WWE would like if the live crowd enjoyed the product in the way it is intended, but it is not important to them that they do.
Unfortunately for WWE years of this thinking has meant that fewer people are wanting to go to the TV show live because the show is more fun to watch at home, because it is intended to be watched that way. And if that trend continues they will be filling smaller venues or half filling big ones, with disinterested crowds and suddenly the prop crowd isn't working as intended. The show doesn't look popular, and doesn't appear exciting.