No. To view everything in black and white answers, is to miss the whole myriad of colors, not to mention all the shades of gray. There are seldom just two defi9nitive answers.

Nope, there’s a shit load of gray out there.

Nope. Quantum physics demonstrates that two things can be true at the same time in the physical world and I believe that there are also philosophical ideas which can similarly hold within them inherent contradictions. We call this a paradox and both the Buddah and Confucious detail many such intellectual games.
Listen to Zen master Alan Watts for some interesting ideas on this sort of thing .

No, not everything is objective. Granted, sometimes we take this too far and make objective truths out to be subjective or relative when they really aren't. Such as this bullshit that everyone's belief system is true in it's own way. Nope. Bullshit. haha

Nope, there are nuances.