So the discussion is starting to go in circles a bit, but what seems to be largely forgotten is that in every sim even modern ones, and unfortunately especially those focused on online competition, the experience is still made easier for us compared to real life in several ways. Tire warm-up is no exception.
Contrary to what I sometimes read here, no, the tire warm-up in the game is not “too difficult.” In fact, we have a much easier time controlling the car on cold tires than drivers do in reality. Sure, I’m not a Hypercar driver myself, but apparently Charles Milesi is

For those interested, you can hear him talk about it here:
It’s in French, but to summarize the relevant part :
the YouTuber asks Charles for his opinion on tire warm-up, and Charles says that S397 is actually right to keep tire warm-up simplified, because according to him, players would struggle far too much if cold tires behaved like the real thing.
He has done other videos in the same style, and in the end the main criticism he has about the game is more related to braking phases being too abrupt when grip is lost (especially in another video).
So overall, we already have tire warm-up that is easier than reality, probably not something we should complain too much about.