I’m not sure what it’s supposed to achieve.
Qualifying determines the starting grid… same as normal. Then you have a race but with no strategy, it’ll be a single set of tyres.
The only really new factor is that a crash in a race is much more likely than in qualifying. That probably means everyone’s likely to be even more cautious at the start, because a collision would not only mean no points in the sprint race but a rear-end grid position for Sunday.
Overall it’s hard to figure out how this is going to mix anything up, beyond giving a bit of an advantage to whoever can switch the tyres on in the relevant conditions with a light fuel load (and looking back at recent form you might fancy Red Bull, but then Mercedes figured it out in Turkey so maybe again it’s all cancelled out); but I guess we shall see, if it’s voted through.