If people understood that the horizontal conflict (the split into the subject- object) produced by thought is an illusion, and the "I" is useless the "psychological" sphere, it would mean a radical change.

Thought is perfect for calculating something, creating a new algorithm or navigating the streets of London. Or in the magnificent world of technology, to build a bridge, it is functional there.
But in the psychological sphere, the I cannot evolve, grow, transform or change, because it simply does not exist per se, it's a product of thought, which is always old and limited. The whole imaginary problem disentangles if this is completely understood.

It's not enough to understand it intellectually, as as an intellectual conclusion. It has to be a direct understanding, an insight into the whole issue of how thought operates (including the horizontal conflict). There must be a complete understanding of the operation of the META Process of thought.
When this happens, the problem disentangles by itself because thought sees its limitation and realizes that it's completely useless in the psychological realm. Thought cannot voluntarily negate itself, but it can negate itself by seeing its own inherent limitation and falseness.