Roman's feud with AJ was a trade of stupid hits. AJ got clocked by multiple finishers, weapons and got attacked by The Usos and kept going, but someone had to win so they pushed the guy they've picked as the new face of the brand. It's such one-sided, blinkered view that Reigns is the only one winning after taking these hits. AJ took literally every move in Cena's arsenal, including some that weren't, and still came out on top, but no one mentions that because he's well liked. Rollins came out with one leg against HHH, took further leg punishment, yet still won.
I'm not trying to argue that Roman doesn't get pushed to high heavens, because he does, but 1) any anger in that regard should be directed to the show runners, which simply doesn't happen, and instead you've got the same people who absolutely adore hating on Reigns literally bowing down when Vince makes an entrance, and 2) they could have easily swept his violation under the rug and kept him at the top all year, but they didn't. He was kept as a main part of shows because he's a big draw and good in-ring worker. The fact still remains that he dropped his title, took the pin in the rematch, lost more times in the run up to the inaugural UT match, then was chucked into an elimination match alongside Big Cass to make up the numbers in a match centered around Kevin Owens, Seth Rollins and HHH.
At the end of the day, WWE is not a competitive environment and any and all testing is done purely on a wellness basis. Any decision they make regarding talent is of course going to be dictated by what they bring to the WWE as a business, so by default their top talent is going to be given a bit more leniency than talent lower down the card. It's pretty much widely accepted that Angle was let go because of his addiction to painkillers, something TNA didn't give a toss about, and also that Jeff Hardy was let go because of his drug trouble. Even when they've not really been too hot on dealing with wellness violations, they've still washed their hands of top talent when it's gone too far.
My point was, and is, that the witch hunt for Reigns and his one wellness policy violation does not stem from any genuine concern for how the wellness policy is applied to WWE talent, but instead from the ridiculous hate directed in Reigns' direction. The man has been given one of the biggest pushes ever, that is undeniable, and I can fully understand why people would be unhappy with that, but to accept that WWE is a scripted wrestling show and then direct all anger towards the guy being pushed, rather than the people scripting it is just daft. It'd be like kicking off at the kid who plays Bobby Beale on Eastenders because you didn't think he should have been the main part of a storyline. It's entirely misdirected.