For me personally, it has gone away. I used to own Moto g ( 1 gb ram version) so there was no way i could afford to have messenger and facebook app installed on my phone. I budged and installed messenger when i bought nexus 6P though.

I uninstalled both Facebook and Facebook Messenger apps from my Nexus 9 and it's become much faster. Can say that I am surprised.

I tried the Facebook apps and they were slow, buggy and intrusive. Messaging from the mobile web page was fine...

Message to monetizing corporations - Sorry, all I want is a 4.5" web page downscaled from 21". It's all just CSS, right?

And this is why I signed up to the dream and bought a Mozilla device with Firefox OS; alas the hardware died around the time the OS was orphaned.

I use a handful of apps on my phone regularly and they're mainly for metropolitan services and web pages that refuse to reskin their sites for small screens. Nothing that couldn't be accomplished in HTML5 and with decent coding would probably run better than the current impls.