Not everything we used to root our devices for needed root access… It was just a convenient way to accomplish it.
Shizuku does what it does through System APIs and ADB Shell. Because it’s not relying on any sort of exploit but leveraging ADB existing APIs, it’s unlikely that Google would block it.
I am am far from an expert, so if I get something wrong, I’m sure the sages of the internet will correct me with grace and understanding.