It doesn't.
There is a reason why nothing has even come close for 30 years to a point nearly every human being on this planet used html&css that owns some kind of personal computer including smartphones. There is a reason why it gets adapted for desktop apps, mobile apps, embedded apps, 3d rendering and pretty much every other rendering mechanism - because its best and lightyears ahead of everything else.
And you try to argue that couple of dudes from one company has made something better in couple years LEMAO.
Yes we know they are not using html&css from the screenshot. Their inspector is made in C# that is just bootleg chromium inspector. Unless they literally remade chromium inspector in which case it would be even worse lol.