Only if you don't have the Shiny Charm either sadly. Both MM and SC need to not be present.
Can confirm this to be true. I had hoped that since MM and Shiny Charm, other than basically reveal PSV values for Quandra's RNG Tool, just changes things to make shinies appear at earlier frames doesn't hinder this breakthrough method. It does, now I dug up a Sun cart I sealed away because of a console ban I caused with it (used its private header on Gateway, went online with that and the legit cart at the same time), and will play through it again just for this. No need to go online with it.
Thanks to @hurricane_matt for the well explained guide and for whoever discovered this, I assume wwwwwwzx?