Some movements don't let you fake strength.
A heavy leg press is strength. But it's not the whole definition of it.
There's being strong in one fixed direction. And then there's being strong when you have to balance, shift, control the load, and still move well through a position you don't normally train.
At some point, strength has to exist outside the most supported, predictable patterns too. That's where you get exposed.
And I think that's the part people avoid. Once you're strong in one direction, it's easy to assume that's the whole of what you've got.
But the body isn't one-dimensional.
We get good at one version of ourselves and settle there, because anything new makes us a beginner again.