Having overheating problems at such a relatively early stage of the race was something bad a team wouldn't fancy. A Grand Prix was a marathon of everything combined, including consistency and durability, and if the engines were already running hotter than safe margins before the first service stops, then performance and even the chance of seeing the checkered flag would tilt towards doubt.
A car could lose power, the brakes could fade, the tyres could damage, and ERS had a high chance of failing. These were all devastating consequences of overheating in an F1 car, and of course, no team would want such a thing to ruin their drivers' races.
But since Luca was in P1, Trampos didn't really want an early pit stop that could cost him position and momentum.
Victor's case was different because he was in P17 at the time of the diagnosis. A stop for him wouldn't make much difference in the grand scheme.
'Hmm. And I thought that I had all the skills attainable...'
