I would disagree that it was wishful thinking. It was cynicism. As soon as it was announced that the 3-hour 'race clock' had started, and therefore there was no chance that the race would be postponed until Monday or later in the year, it was, if I may say so, obvious that they would be bringing the cars back out to get the two 'race laps' in the books in order to be able to declare that the event was officially held and all contracts were fulfilled. If by some miracle the clouds were to part and a partial race could be run, that would be nice, but it was not the primary motivation for sending them back out. The rivers across Eau Rouge could have been a foot deep and they would still have sent them out.Yes it was complicated by the expectation that there was going to be a break in the weather. And the problem with the safety car is/was that it could not go fast enough to allow the race cars to ‘dry’ the track enough to improve visibility for racing.
Jean Todt, as far as I can see, couldn't care less about motor racing - a bit ironic considering that the bulk of his career and all his reputation and wealth were based in motor racing. Now he's just another politician enjoying networking and having people kiss his ass, and trying to burnish his legacy by talking about road safety and eliminating the internal combustion engine.
It cannot be that difficult for the FIA to comb through the Sporting Code and Regs, identify their flaws, anomalies, and perversities, and try to resolve them, rather than to wait until the world sees the FIA provoking yet another giant face-palm. All it would take would be a bit of humility and some genuine interest in the sport - both of which Jean Todt completely lacks.