Yeah, I have one of their keyboards. The keyboard is advertised as a QMK based device but it doesn't work with QMK software. At minimum using their website means they get a ping whenever I'm configuring my keyboard. At worst they could be asking for all sorts of tracking information, usage details, etc. Heck, since their website can configure the keyboard's firmware they could add keystroke recording the next time and I'd never know. Now, I'm not accusing them of that or saying they would do that, but it's possible. When the site goes down one day what do I do then?

Local software will always live longer and have more respect for my privacy than web based software.

I'm thinking about throwing AI at the problem and either working to make their site work offline, making standard QMK software work with my keyboard, or replacing the firmware with more standard QMK.