Agreed. I see that you're a fellow Vivid 350er!
I don't know about your connection, but I guess I'm one of the lucky ones that lives in an area of the VM network that isn't riddled with crippling congestion.
I pretty much see 380-390Mbit constantly 24/7, especially from sources like Steam etc.
On the more relevant upload side of things, it's constantly 20-21Mbit on just two bonded upstream channels. I'd be curious to see if VM do try to compete on upload in future though, even though 20Mbit up is plenty for my needs currently.
As long as this continues (I'm always waiting for the other shoe to drop with VM), I'll be happy to stick with this, especially as my nearest BT cabinet is around 400-500M away, and at that distance I believe G.Fast would have significantly deteriorated anyway.