I dont get this attitude. If there is some specific test you need before you'll trust it, what's stopping you doing that? I can understand your response if it was a paid product, but this doesn't even require you to install anything. Instead of appreciating the work that they've put in, you come right in with a negative comment that's not even based on trying it or knowing anything about it.

I’m on my phone at the moment, and didn’t want to judge this product on its iOS Safari performance, as that wouldn’t be fair.

With regard to my attitude: I’ve run into a lot of people who are trying to build “AI video editors”, and many of them don’t realize how intense a basic video editor actually is. It’s the kind of area where, the faster someone gets to the brick wall, the sooner they can start working on getting through it.

Furthermore I think it’s good for them to know that if achieving what I described seems daunting and they want to focus on the AI angle, it’s totally fine to fork an existing mature OSS video editor and just build the AI features on top. That’s what Cursor did for IDEs, and they’re finding a lot of success.

It's ok to wait til you've had a chance to try it before commenting.

They don't seem to me to be focusing on the AI angle at all. They mention one AI feature as coming soon.