The Inmarsat GX aircraft are on a 20/2 profile still from as far as I can tell.

The experience now on a 787 or 777 is truly terrible and relying on the WiFi for anything serious (ie work) is now not something you can do. The issue seems to largely be one of upstream saturated - because of the way TCP/IP works it requires an ACK for any TCP connections. 2Mbps is not a lot of upload and it doesn't take long for that to become saturated once people like me start uploading a photo of every glass of champers which in turn messes with ACK packets and makes the already high latency even worse.

I've had a few occasions where using a Tailscale VPN has improved things to the point where they make the service usable but it's certainly not a magic fix.

A lot of people only focus on download speeds as a measure of performance for any connection, but even Starlink suffers from the issue of being heavily asymmetrical.