as long as there is experience to be witnessed, it can only be done through some individual avatar because perspective requires duality.
yeah, there's no way out of the matrix besides parinirvana, if that's even practical. the buddha's teaching was that every sentient being from every possibility of Reality should acquire the desire to enter a journey to kill its ego, leading to COMPLETE cessation of experience.
well, honestly i think we better live in the matrix consciously (as much as we can) so we do not draw in delusion anymore, loving "everyone" knowing that's "self" love and loving "oneself" knowing that's loving "everyone". enjoy the ride because it can be fun and healthy