Why? For Youtube there is little money to be made from a tool like this. The target customers for tools like this are advertisers that interact directly with creators. E.g. that's also what nindo.de, a similar platform in the German social media space, built by a popular Youtuber pivoted to.
I think the only thing they are doing here that I haven't seen on any competitors website is the differentiation between shorts and normal videos. Last time I checked, there was no reliable way to detect whether a video is a short via the API, so you either have to build ugly heuristics for it or build a scraper that tries to access the video as a short. I think this might be quite valuable as the introductions of shorts has disturbed view numbers and accordingly channel/audience valuations quite a bit.
Per-video analytics are also not something that's freely available on competitor platforms IIRC.
Correct. This is what they say
We use a combination of channel performance along with detailed video performance history to break down longs versus shorts. If you'd like to learn more, please contact our team at...