Dig into the FAA survey data. Average flight for GA was way under an hour. I forget how long, but it is much shorter than us nuts on the forums.There will undoubtedly be some early adopters who are happy with short duration flights. But the majority of pilots won't want that. So the real question lies in when the technology will improve to the point that most pilots are willing to take the plunge. That will give the investors the return on investment they seek. The fact that people are investing money on the technology now is a sign that some think it will be soon. Others disagree, or are at least somewhat skeptical. That hardly makes them flat earth people, so I'm not sure you really know what that means.
So yeah, current battery tech can actually do the job for the majority of pilots. Just like EVs can handle the majority of drivers.
Will electric planes do everything I need now? No way. If I only did local pancake runs? Sure.