Why does XFinity sells a 2 Gb service when its xFi gateway ethernet ports only support 1 gb speed?

hi,

i have the Gigabit x2 Plan with xFinity and have the xFi Gateway, because when i subscribed to the service, you could not get it without that device.

my personal network leverage the ubiquiti Dream Machine Special Edition, which has a WAN ethernet port that can support 2.5 Gb/s.

I was thinking that the xFi gateway would have at least one port that supports 2 Gb/s speed.

But, no… all port are Gb only.

What is the point of selling a 2Gb service when the xFi gateway ports are only supporting 1Gb speed.

Is there any plan to address this weird design?

thanks,

Nicolas