If you're concerned that installing & activating Simple Photo Editor will un-register other SoftOrbits apps, back up the SoftOrbits registry key beforehand -- that will let you put things back. Depending on Windows version etc., type regedit into the Run or the Search box -- note the app should run as admin -- & navigate to HKEY_CURRENT_USER\ Software\ softorbits, right click on that softorbits key, & select export, saving it as a .reg file -- you name that file & save it where you want. Later double clicking that reg file will merge the entries in that file back into the registry, putting it back the way it was.
If/when you select Remove from the menu or menu bar, Simple Photo Editor lets you choose how you want to remove something -- Inpainting, Texture generation, or Quick Remove. You use the selection tools to mask what you want to go away -- on a small jpg it was fast & Undo instant, so no big deal to try all 3 methods. If you click on the Tools menu, one of the choices is Remove Background -- that gives you the option to select both the foreground & background individually, & gives you 3 options for the background, including Photo. If you click on the View menu you can change the GUI's theme, so if you don't like dark gray you don't have to live with it.
Simple Photo Editor itself is a small app that adds the program's folder, Start Menu &/or Desktop shortcuts, & 2 registry keys -- one for uninstall, & the above referenced softorbits key. That makes it pretty painless to try out. It's not going to replace a more full-featured image editing app, but it's not a one-trick pony either. And since it can save in lossless formats like .tif, Simple Photo Editor can fit into your workflow -- you don't have to do all of your editing here. If the image editor you like to use doesn't include good inpainting options, you can still use it along with Simple Photo Editor.
If you're going to use the built-in inpainting tool in P/Shop, there's a great chance you'll use selections [masks] to control when, where, & on what the tool works. In most image editing apps you can almost as easily save just the part(s) of an image where you want to use inpainting, & open those in Simple Photo Editor [or Inpaint etc.], saving the results as a new file that you'll open in your preferred image editing app, where you'll copy/paste the results into the original image.
Yes, that may be too much bother for some folks -- whether something is worth the extra time & trouble is up to you. Sometimes inpainting is the best choice, & sometimes you'll get better results with a cloning tool, though to use a cloning tool without leaving traces can often be pretty difficult. If you're not happy with the results, splitting an image into one or more parts for inpainting may be almost the only alternative, & it can be quicker than going through a bit of painstaking work with a cloning brush, though this is definitely one of those "mileage may vary" things, where it depends on the image, your standards, & your skill level.