I think they want to be especially cautious at Spa, given that this track is responsible for multiple deaths in recent years (Anthoine Hubert, Dilano van 't Hoff) and major injuries (Jack Aitken in GT3).

They definitely could try out more things in general though, like sending out the safety car to do reconnaissance laps on the conditions earlier. Apparently during the first lap before the start was aborted, a lot of drivers complained about visibility though so you can argue that they were trusting the drivers judgements.

Compared to just five years ago, they have been more risky during this and last season. We've seen more standing starts for example and just a few weeks ago in Silverstone we saw a crash at Copse corner (Hadjar rear-ended Antonelli) because visibility was so bad. At Spa, after multiple fatal accidents at the same corner over recent years, yes absolutely they'd rather err on the side of caution.

I thought race direction was on the money today. I've no interest in stop start races or races with endless safety cars. F1 causes too much spray and if the drivers can't see you can't really justify a race with an acceptable level of risk. The only way we would get wetter races is with a complete redesign of the cars, which would probably lower the performance so much that it just wouldn't be F1 anymore.