It is possible. Dithered(hashed) alpha is just 1bit alpha that is… dithered. And with MSAA/temporal data You get smooth transition.
Side note
In Unreal and Unity You have to add dither node, but in eevee it is applied with dither option:
So If You wanna have sharp transiotion just sharpen/cutoff transition and i think it should work the same as old cutoff.
