The only stretch of this argument (could be valid) is
If they are gonna score anyway, might as well let them do it in 2 plays (1 minute) instead of 14 plays (8 minutes). That way our defense doesn’t get gassed.
Again, if that is your argument then you might as well onside kick all the time.
If he is saying that the D should play with higher risk (more blitzes, take chances,etc) then it is valid.