Segwit is more like 1.3MB equiv, to 1.75MB equiv in a rosy scenario. It also gives a heavy discount to signature heavy transactions like the vaporous LN. Most importantly, the "soft" fork method allows no room for protest at the node level.

It has the added "benefit" of leaving all non segwit nodes in a half broken state, not able to fully validate. All done without their request or permission.