There is a perception that since the declaration of "sports entertainment," WWE has allowed itself to move away from an emphasis on wrestling as entertainment to an emphasis on entertainment that happens to include wrestling. Unsurprisingly, fans of wrestling itself could see this as a problem.
Exactly how much water such an argument holds is another question.
You could argue that NXT is proving some of the sceptics correct in their differentiation between sports entertainment and pro wrestling. It focuses on wrestling and feuds, without all the sundry "entertainment" that RAW is bloated with and gets raves reviews.
I tend to think that WWE's problem is not a change in emphasis but more that it is forgetting how to make consistently entertaining wrestling shows, at least on the main programming. There are so many meaningless and repetitive matches, while feuds are so poorly developed, champions so thoroughly neutered coupled with a chronic underestimating of the can of worms that the "reality era" has opened with regards to the stubbornness of booking and a failure to learn from the YES Movement last year (which in itself was another can of worms opened by Vince and co painting themselves into such a corner that they had to bow to fan pressure).
All of that together has formed a perfect storm of complete nonsense, with the reception of Roman Reigns being Exhibit A. This time a year ago, people knew he would be the anointed breakout star of the Shield and that was acceptable. But he has been mishandled so badly that it could very well blow up in WWE's faces. Sure, Bryan and then Reigns himself being injured did not help but Reigns has had such a lacklustre run as a singles competitor, particularly in contrast to the excellent Rollins and the pops that Ambrose was getting in the early months of his singles run, that few really buy him as a credible champion/threat to the Beast Incarnate.