Logitech MX Master 4

[phinix]

So what do we really know about this new Logitech MX Master 4?
Why the hell its so heavy? Keycron I think has similar mouse and two times lighter.

 

[phinix]

Still is for £83.99 for NHS, I get discount codes (25% off on Logitech site).
But I think I'll get myself PRO X SUPERLIGHT 2 DEX.

 

[phinix]

So, in general - how is it?
Is it good for gaming as well? I dont play CS, but games like adventure, strategic etc
I've been using Superlight for 5 years now and worried that if i get MX4, its gonna be too heavy for me.
And why they kept polling rate of 125 Hz???