Because all of your screenshots look like the standard Altium SCH and PCB symbol formats and color themes.
The integrations that the other reply mentioned also threw me. I was excited by the “Kicad integration” checkmark. I don’t like the term “power user” but I have done a lot more with Kicad than most folks I know, and I don’t really want to go thru another EECAD learning curve.
Even after seeing this comment, I thought it was a CAD plugin as well.
I think the main thing is that there is no screenshot of the entire UI or window of the program on your website. It looks like there's some VSCode and as others mention, other CAD software styles, leading to the impression that this is a plugin that you use alongside other things.
The nature of the tool itself is another reason. It claims compatibility on the pricing page with various tools and says something along the lines of you can use your existing tools to finalize placement and routing, leading the user to think it's a plugin that automates some of it.
I would suggest putting a more prominent link to your FAQ (https://www.jitx.com/blog/faq) along with updating it with more information in it.
Separately to this, I think it would be nice to have a more complex (more parts, some power and mixed signal elements) design on the website that users can easily browse and evaluate (view layout, schematic, animation/timelapse of design process), so that users can more easily visualize how it might work for an actual project. It seems like many of the examples are fairly simple currently but the power supply TPS chip is fine.
Even the FAQ page that other comments linked repeats multiple times "quickly iterate on designs, and then use existing CAD tools to finalize placement, routing".
If this was a fully featured freestanding CAD tool, you wouldn't need to do any finalizing of placement or routing in real CAD software, the final step would be directly exporting gerbers for manufacturing. Exporting to other CAD software would be only necessary for migrating design away from JITX.
With how prominently the description mentions exporting to other CAD software, makes it sound like JITX lacks some essential parts of ECAD software, meaning that most users will want to export and do parts of work in "real" ECAD software.
Can you fully complete most projects at professional level without using other ECAD software? Using other software for some specific tasks like simulation or testing is fine. I am talking only about parts which you expect to be included in most PCB design software.
Welp - seems there are out of date parts of the website. We launched router last Tuesday so have to update that we are end to end now. Thanks for the pointer!
The pricing page lists a bunch of CAD “integrations”, which aren’t mentioned on the home page, so maybe that’s confusingly implying that you need at least one CAD integration?
(it is a freestanding tool)