The roster nowadays can't keep the crowd's attention without doing all the unnecessary high flying bullshit and the ones that actually have the ability to are forced to tone down their shit. Wrestling as a whole has changed and will continue to change, from the way fans think about the wrestlers to the atmosphere of the show itself. Back then, fans wanted great storylines and entertainment. However, nowadays, you have lots of fans wanting better matches and wanting the WWE to push every wrestler that knows the most wrestling moves (Sami Zayn, Finn Balor, etc) as opposed to a wrestler that fits the bill of being a household name for both casuals and hardcore fans alike (Luke Harper). As a result, we're showered with crap like "I want to see Kevin Owens vs Brock Lesnar. I believe he could put on a fight because he's fat." or "They should push Sami Zayn because he has that underdog feel to him, despite the fact that we have seen that underdog storyline a bunch of times in just the last 10 years. Roman Reigns can't wrestle because he doesn't do a lot of jumping moves and neither does Sheamus, so that makes them both bad wrestlers. Triple H is not a technical master in the ring and he married the boss's daughter, so he sucks despite the fact that he's a good storyteller and can hold his own against greats on the mic." There are even fans that still think that small wrestlers are getting held down by the WWE for being small despite the number of cruiserweight/light heavyweight wrestlers in the main event right now.
Now, on to how the atmosphere changed. The WWE making things more family friendly and limiting a lot of things because kids are watching costed them millions of fans. Hell In a Cell matches weren't Hell In a Cell matches because there was no blood and spots were watered down. Characters were watered down and we are relegated to seeing wrestlers just wrestle instead of segments showcasing their personalities. Who could forget the car chase involving Roddy Piper and Goldust at WM, the Stone Cold-Booker T supermarket brawl, or The Undertaker crucifying someone by cutting them and licking their blood? Stuff like that were awesome and contributed to the success of the WWF/E. Yet, nowadays, we have wrestlers that have potential to go very far if the WWE did more of those often like Bray Wyatt, Roman Reigns, and The Miz. I'm still waiting on the segment where Bray Wyatt kidnaps someone related to his rival. Scripting heavily is a bad choice too. Of course wrestlers are going to mess up, but that's how they get better. If you don't take a chance on them, they will not tap into their potential, no matter how good their matches are. I believe the WWE holds the hands of wrestlers a lot nowadays. All this sugar-coated bullshit made the fans look at wrestling in a clearer way than they have before and it has created fans that think they know more about the business than the people actually in the business, as I have put examples of in the first paragraph. There has been a very big lack of consistency in WWE storylines. One week, Stephanie hates Reigns and she gives him a title match the next. Every damn championship in the company except for the U.S. title and IC title look the same and fans have accepted that laziness.
I'd rather watch Ricky Steamboat vs Ric Flair or Hulk Hogan vs The Rock over AJ Styles vs Dean Ambrose or Nakamura vs Zayn any day because they have better storylines and better in ring psychology and storytelling. That's also the reason why my favorite tag team in the WWE right now is The Revival. The New Day is a shame to wrestling stables for twerking and, while women wrestling matches like Bayley vs Asuka deliver, that's not a reason why we can't have bikini contests or bra and panties matches.
So, when you look at it, wrestling is always changing. However, you should ask yourself "is it for better or worse" and contemplate why you chose your answer.