Resynthesizer GIMP 2.10 / 14 Windows vs Ubuntu 18.04

It has been managed to copy the necessary files to the plug-in directory in Windows and the Resynthesizer tools work in Windows.

My question is why it is so goddamned difficult to do the same on Linux, and really should be.

I use GIMP 2.10.14 on both platforms, but the Linux side is impossible. Why is that?

On Windows, I just had to copy the plugin scripts into the correct directory and everything worked.

This is not the case with Linux, and for life in me I cannot understand why it would be so?

Is there a real reason why this is the case?