That said, aren't all the marshals waving flags after the race is finished? If so, that would mean she is ignoring them, or was that not the case here?

Hey, at least jokes make people laugh. This is just another instance of the FIA being a cancer to the sport. Worst of all is that I'm not even sure any amount of anti-corruption drive will fix errors like this that are just straight up idiocy at its, uh..."finest". Between the FIA and Formula 1, open-wheel racing is really not having a good start to the year.

I know F1 fans need to get their daily Fuck the FIA. But you cannot be serious.

Driving at racing speed on a track considered not live, with the potential of marshalls and other track staff on the other side of the barriers. Is generally frowned upon.

Intentional wrecking is also harshly punished. There's a reason you don't see it outside the very low levels.

Magnusson got a ten second penalty and three points. Perez may have "only" gotten five seconds and one point. But both of these incidents happened on a live track during a race session.

Trying to make any connection between the penalties is a pointless endeavour.