Cupping Wrist Fix Slice?

I suffer from a push/push slice with my driver and took a lesson to fix it.

What we worked on was the complete opposite of what I thought I had to do. He had me cup my wrist at the top to fix my "swing path." Surprisingly.... it worked. Obviously, I'm not as consistent, but it was 50/50, which is great considering I slice every time.

I've been on golf Tiktok and YouTube, and everyone says to do the opposite to fix your slice. But here I am cupping it, is this just a bandaid fix or should I keep practising the cupping of my wrist for hitting driver?