Bottom Line: someone who holds that there's an objective Deposit of Faith that does not change and is not subject to revision ... is not a Modernist. That is to deny the very essence of Modernism.
Well, let's subvert that clear definition with gratuitous distinctions like sedeprivationists do, such as that Francis did not
really accept the papacy because his understanding of the papacy is heretical, making it objectively subjectively not the object of his will.

The same could be said of Strickland, his deposit of faith includes teachings of V2, JP2, etc. which attempt to
change and actually contradict the deposit of faith, therefore objectively subjectively he believes in a changing deposit of faith.
But actually I'd expand the definition, I'd classify anyone who believes the Magisterium needs interpreting as a Modernist.
If the dogmas were understood as they were written and not according to interpretations of "approved theologians" there would've been no Vatican II.