Actually we don't need to pretend.
There's literally a vast number of coaches out there and the profile and quality of candidates (that's the view of a majority, not just me) is bearing out that actually there are more than enough coaches to fill the posts we have.
Whether it's from one team or a hundred matters not. The ability of a coach isn't defined solely by their surroundings.
And to complain about a coach dipping back into the well he most recently sprang from, one of the most common things a newly appointed coach does, when that team also happens to be the current NFL champions, had to be one of the most obtuse attempts to find fault I've seen recently. And I read this forum, so that's quite a statement.