As I said above, there are 2 ways to look at it.
Conventional reality exist/ not exist is different from ultimate reality exist not exist.
It’s only problematic if one mix up one for the other.
Example: VR reality. Matrix, etc. Plug one into the experience machine, people might want to wake up from the dream of VR, thinking that it’s not real, it’s not really existing. The flesh and blood world is existing. This is the conventional reality view. You’re stuck in seeing in this view, beings doesn’t exist. That falls into the wrong view of: the other religions, say of Pakudha Kaccāyana: DN 2: Sāmaññaphalasutta—Bhikkhu Sujato (suttacentral.net)
He said: ‘Great king, these seven substances are not made, not derived, not created, without a creator, barren, steady as a mountain peak, standing firm like a pillar. They don’t move or deteriorate or obstruct each other. They’re unable to cause pleasure, pain, or neutral feeling to each other. What seven? The substances of earth, water, fire, air; pleasure, pain, and the soul is the seventh. These seven substances are not made, not derived, not created, without a creator, barren, steady as a mountain peak, standing firm like a pillar. They don’t move or deteriorate or obstruct each other. They’re unable to cause pleasure, pain, or neutral feeling to each other. And here there is no-one who kills or who makes others kill; no-one who learns or who educates others; no-one who understands or who helps others understand. If you chop off someone’s head with a sharp sword, you don’t take anyone’s life. The sword simply passes through the gap between the seven substances.’
Ultimate reality view is being posited in the SN5.10 sutta. Where one sees dependent origination, not clinging to the extremes of existence vs non-existence. One can abandon attachments to self, because the delusion of self is abandoned, yet there’s the ability to act in accordance to the conventional reality, kamma, etc. There’s just the senses. Like Bahiya sutta, in the seen, there’s only the seen. No you in here or there. The you is a mental construct, imposed onto experiences.