I only trust this once they have finally detailed how they will allow "easy sideloading" (See one of the last fdroid news on this, currently google is on track to basically ban sideloading as it exists) and what exactly means "registered app store program".
Sideloading without automatic updates is not very useful
That's one of the arguments for sideloading. I don't want to use your new liquid ass design.
why not?