If Apple announces at VR/AR headset that looks comparable to the Quest, I think the choice is a no-brainer if you care about privacy. And if you're already in the Apple ecosystem, I can only assume that my Apple headset would work seamlessly with my Mac/iPhone/iWatch/iPad.
Perhaps but I think it is quite unlikely the Apple headset is going to be anywhere close to $499. $1499 is more likely. Knowing Apple it will be higher than my guesstimate but we will know soon enough I guess.
As for this new Meta Quest headset. There is nothing Meta make I would touch with a 10 foot pole for personal use. I don't use Facebook or Instagram or WhatsApp and I don't plan to change that anytime soon.
Hell I have all of Meta's known domains blocked at both the network and browser level so I don't stumble onto something.
Based on current rumors, the Apple headset will have better display tech, but no controllers (only hand gestures), a separate battery, limited software, and a much, much higher price. For casual game-oriented use, the Quest will be the better choice for most.