My take: Mclaren has been protecting Norris all season long. I think that internally Mclaren are overcompensating for criticisms that they did not support Norris enough last year. So they decided to "back" Norris for the title thinking that Piastri would have the same weaknesses as last year. What they did not anticipate was Piastri's growth and Norris continuing to lack the strength to be the team leader that they want him to be. It was on full display with the stupid driving at the pitstop where he risked damaging the floor, and then missing the final chicane on the last lap. So now it is an awkward dance for Stella because the driver who seems to be stronger tactically, mentally, and speedwise in the races (Piastri) must be undermined to keep Norris ahead.
It started with the team order against Oscar at his home race (also the 1st GP of the year), and the baloney excuse that the fans ate up. Then it continued with refusing to swap the cars here in Japan simply because Norris would have lost out if Oscar passed Max when Norris couldn't. To highlight the hypocrisy, it was at this very race last year in Japan that Lando Norris groveled for team orders to be let past Oscar to secure the better team result. Mclaren granted him that team order. Now 12 months later at the same circuit, they refuse Oscar the same thing? Didn't Andrea Stella say the team would come first? That only seems to be relevant when it can be used to protect Norris and undermine Oscar...
The cracks are starting to appear in my opinion. Stella openly discredited Oscar's performance by claiming after the race that Lando was saving his tires which was a lie because Oscar's engineer told Oscar that Lando had no more pace... Stella claimed that Mclaren team comes first, yet denied Oscar the opportunity to better the team result. Stella said you needed at least 8 tenths to attack. Oscar was inside Lando's DRS and attacking for 10 laps. Oscar was faster than Lando, and Lando was faster than Max, but both Mclarens were losing in the dirty air. If Oscar (the fastest car) could stay in the DRS of the 2nd fastest car (Lando) then he would have been all over the back of the third fastest car (Verstappen) as one could logically deduce. So I'm not buying any excuses that Stella has given.
Stella is flustered by the situation and his wrong bet. That's when the contradictions and defensiveness start to come out. All of it looks like Stella trying like mad to protect Norris as they must have established that they wanted him to win the WDC this year. It's all come undone because you can't force a driver to be WDC when they are not showing the qualities to take it themselves. There's still time for Norris to up his game, but for now it just looks like Stella made a bad bet before the season started and now is forced to see it through even though he must undermine Piastri and contradict himself to do it while praying that Lando doesn't make him live to regret it.