Pro builder’s runtime examples are minimal, and Pro builder doesn’t seem stable enough when using Boolean operations. (My meshes are messed up most of the time I use it)
I don’t think there is any easy way to do that… the probuilder’s boolean tool is unstable and is in preview for ages!!
Here are some scripting API’s for probuilder which might help, are you using those already??
As you said the Boolean API is experimental (and not worth using in most meshes) and ProBuilder as a package itself feels quite limited when we don’t have CSG algorithms.
I really don’t know if they felt pro builder is in a good state to stop adding any kind of feature for such a long time. Since it has been bought, I have hardly seen any updates except compatibility and bug fixes.