Then I think you missed the point of the post I was responding to and definitely missed the point I was making. Which was the design of the spell.And so it should have the same requirements no matter what. What did you think I meant?
The problem I see with spells like plane shift is that the components exclude their use in many planar adventures. It is easier to provide a portal (or something else) if planar travel is needed.
Particularly in published material. Even if the party has access to the spell, running a side adventure to obtain a focus is going to rob the main plot of momentum.