> Is the example in the page really made by the computer?
Yes.
>In my opinion the pauses in where the filler words were are slightly too long. Is it possible to configure this?
I agree, however, if you use it in an interview. The edits sound better. In an unnatural setting, you get unnatural results.
Currently, there is no way to set it for now. But customization is planned for Q2 next year.
>Is it possible to keep some filler words? For now no, but keeping some filler sounds to keep it authentic is something which I plan.