If it was 0-0 at halftime, I'd be much more worried. The fact that it was 3-0 makes me buy into the "playing it safe" narrative because the game was pretty much over at that point.
This is also where the bloated World Cup helps. In 2022 we played on the 21st, 25th, and 29th. This year we play on the 12th, 19th and 25th. So a lot more rest time, which helps for recovery.