Yeah, that's kinda shady.
I only use Power Manager for Battery Info (also in Service Viewer package, which is still free) and applying profiles manually (since the monitor costs me about 20% of battery life a day). If there is an app that can set up profiles the way PM does but not necessarily with running the battery-draining service, PM will getting uninstalled.
At least Useful Switches is still free with an option to donate. If Power Manager were set up the same way, I might have. Now we'll never know