True, but I think the next 3 races are naturally much more kind to Red Bull. Australia and Shanghai are fundamentally two of the absolute worst circuits to have opened the season with for a Red Bull chassis.
I think that in Japan/Jeddah/Bahrain, Max can race in that territory like Spain/Imola/Qatar last season where Mclaren is still quicker, but not so quick that Max can't make any difference? Suzuka is a Max track. Jeddah should suit the car's aero efficiency (area where Mclaren appears weak so far). Mclaren speculated that they would be weaker in Bahrain as well.
I really do think the flex wings thing is not an insignificant detail. It was delayed until Rd 9 at the insistence of the teams who felt they would be impacted the most. Compare that to how quickly the rear wing stuff was addressed. The Mclaren drivers are saying that car is tricky to drive so losing that front wing might disrupt them a bit. Who knows.
The rest of the season needs some good development from Red Bull combined with Mclaren getting nerfed a bit by the front wing test changes. Mercedes will also be hit by that.