If you dynamically sold an SO are you still static even if you did it "custom" ?
At that point it's a dynamic loader in another name?
If we look at the issue at its core, we're still a statically linked program in a hostile environment, forced to dynamically load device drivers from the system.
It's similar to Golang; on MacOS, it has to use libSystem, even though otherwise, these are the statically linked Go binaries we're used to and love.
Let me add a little more detail: if I use vdso with gettimeofday in a statically linked program on Linux, am I still a statically linked program, or not? :)