Well, yes, but we were specifically talking about Backgrounds and the Background Features from 2014's D&D 5e. I'm responding to those saying that DMs shouldn't have to ALWAYS agree that those features are always True all of the time. I was saying that I never just negate the effect, I turn them into an interesting twist or adventure hook (for those times when the Sage can't just auto find the Big Secret of the campaign, or the Criminal arriving in a foreign city can't just auto find contacts even if they haven't ever been there before, or the Folk Hero is in a village that is immensely fearful and distrustful of outsiders etc...)
I was just trying to explain my approach. In session 0 I would explain that I don't use background features as written but I will try to find ways to make the background matter. In large part because when playing with other DMs, I don't remember a single time the background feature made any difference.
Let's say my PC finds themselves magically transported from FR to Greyhawk. I would never expect my criminal background feature to work, but even if it did what possible impact could it have on the game? So Nine Fingers Louie knows I'm in Greyhawk. They have no influence in Greyhawk, no way of sending aid even if they wanted to. Perhaps as part of my backstory we didn't leave on the best of terms ... after all I'm an ex criminal and not currently a member of his gang. What difference would it make if I could get them a message? What benefit does the character get?
Instead the player will have a better understanding of criminal organizations, know how certain grifts work or have proficiency (or advantage if they already have proficiency) in skills related to criminal activity. Those to me are actual benefits that have an impact on a game when sending a telegram to someone far away that will rarely make a difference would not.