I took it to mean that he didn't have any particular pressure to play local kids - that meaning no greater pressure to play promising kids than he's under to play his world class / internationals.
IMO the fact is that all managers are under some level of 'pressure' to play every player that they have access to, but that there's a much greater pressure, indeed a professional responsibility on them, to ignore such meaningless distractions as the age or place of birth of players and to do what they're actually paid to do by selecting the team best placed to win when taking into consideration the need to rotate the team.
The journo was just fishing for a sound bite that could be used in a negative headline that the numpties who think they know better than Pep would lap up.
Who was the journalist? He didn’t introduce himself before asking the question.
The impression I got was Guardiola just didn’t want to talk to that particular journalist - he gave him a pretty cold stare as well as the short answer.