This is just blatantly stupid. Seriously, I would use less offensive word, but there is no equivalent. You haven't put a single thought in this post, have you?
I am yet to see a single post that goes along the lines "Dear Blizz, I'm a PvE player and I don't feel powerful enough, so please keep on inflating the numbers which are totally insignificant as long as they are proportional to boss' health, moreover I can't even distinguish them during the fight but I want more digits because half-screen-long numbers are essential to the PvE gameplay experience.". Let alone such an overwhelming feedback that would be needed to justify your thought process...
Inflation - are you familiar with this word? I see that you are so...
The stat inflation is a result of solely Blizzards' decisions. Introducing gear upgrades and Thunderforged/Bloodsoaked(?) gear instead of timed nerfs to the current content only accelerates it. And if you had done just a tiny bit of research you would find out that the numbers inflate at an exponential pace. So the longer Blizzard avoids ilvl squish the more noticealbe differences in "power" during an expansion will be and the more radical measures will be required to control it.
The gear ilvl progress in PvP is more stable because... Well, Blizzard decided to pick such a model of gear progression! And I don't think they consider that to be their best idea with all the means they have to undertake in order to balance the gameplay.
You might bring up the ilvl squish and try to convince me it didn't happen because of negative feedback from the PvE community. Show me the proof. There was negative and possitive feedback and I bet both were coming from each sides - PvP and PvE. Either way Blizz didn't introduce it because they eventually said they weren't ready for such an overhaul.
TL;DR: Use your brain before you publish conclusions made uniquely on your opinion.