Are Osborne and McBride calling the plays that were players prepared for under the tutelage of their staff?
Absolutely dominant. Those teams would be just as dominant today as they were in the 90s.
And no, if anything, the game has moved toward what Osborne ran offensively. TO ran a bunch of single back and "spread" type formations in the 90s.
However, the difference between TO's offense and say an Oregon spread is the reliance on dominant downhill running. People recall the option, but TO's "bread and butter" was the iso and other between the tackles running plays. The offense expanded out from there.
I'd say that if Stanford substituted the option for about half of their current passing plays, you'd have something resembling TO's O. However, I think TO was more imaginative than almost any other OC out there.
I'd say Malzahn's offensive philosophy is pretty similar to TO's, as is Paul Johnson's sytem (though both are out of different base formations (though TO was starting to tradition out of the I formation when he retired).