Hi there,
We use miniconda without any environments on our production servers. As they are immutable (and relatively short lived and completely replaced when needed), creating an environment doesn't really make sense. We rely on pip to install custom python packages, and also those unavailable on conda. It used to be available at "{miniconda_path}/bin/pip" and for some reason is no longer available with the installation.
I haven't found anything related on the conda changelog. My understanding is that if we are still able to install conda packages without creating an environment, the same should be true to pip.