I've been thinking this for the last few years. Nobody really comments in her thread anymore, and usually any stuff about her is related to Kora, her kid, or some article about Evan Spiegel that by contract must mention they're engaged.
The two biggest things that have changed, IMO, is she just doesn't seem fun anymore and she's got this weird reputation as a gold digger. She used to be so interesting to look at and see interviewed - funny, flirty, cute. Hooking up with that Kings of Leon guy, doing nude shoots. I dunno - she just had more personality.
Now it appears to just be about the easy paycheck and hanging with her kid. Which I totally understand - it's just not interesting.