That very article mentions that on a number of occasions Ukraine has gained intelligence or pulled off their own ops which the US was completely unaware of.
Just because they're being helped doesn't mean that literally everything they do can be appropriated to the US.
It's not speculation that Ukraine is being assisted to a huge degree.
One angle of that assistance: https://www.nytimes.com/2024/02/25/world/europe/cia-ukraine-...