After playing with Zinoto a lot Friday night before PS5, I could definitely see it being a -1.
My problem with the MU is that approaching Diddy is BALLS hard when we're forced to go for a kill (stock behind, or whatever). But that applies to a lot of our MUs. We both did really nasty things with momentum to each other, though.
We also can't be infinited, but because we can infinite him. Zinoto told me I had some chances to do it and that Yoshi's mobility really helps him set it up. It's probably worth learning how to do it.