Sounds like a false positive... How is it displayed in the "uninstall" list ? If it's called just "Chromium" that'll be hard to distinguish from the un-forked one...1) Chromium version. I'm using Ungoogled Chromium (for Win 64-bit as in below link) and its version is 80.0.3987.149-2. It's reported correctly by UCheck but it shouldn't suggest an pending update available as it's not been released by Ungoogled Chromium yet. Likely it's applicable to Chromium browser users but forks of Chromium might not be applicable
Pros:What are the advantages against SuMo ?