Jungle XP is actually about the same as before. The primary difference is the ORDER. Krugs were buffed while Wraiths were kept the same, and Wolves/Gromp and secondary buffs were diminished.
Try Clearing Red > Wraiths > Krugs or Red > Krugs > Wraiths and you'll find you have about a level 5 first clear if you manage to also get one of the scuttles.
The main problem is most players find Krugs too tedious so they've been ignoring them, which makes the XP/Scuttle changes much harsher for them.
I'm getting 6 shortly after mid does when playing a jungler with clear.... (like Sion, Ornn, etc).
Tbh it's really annoying me.... not because the XP has changed, but because:
-Junglers with Clear are not early strong gankers nor do teammates present good gank opportunities.
-When I don't get Jungle, I get some nubs who don't know anything about this and haven't changed their farm pattern..... which means by the time laners are 6, they are still level 4.... not doing drakes.... not ganking properly, and generally get baited into perma farming the entire game, forcing a 4v5.
(But when I do get jungle I have a hyper feeding support that always makes bot lane impossible, or a hyper feeding top).