Can you elaborate on this?

They've moved back and forth between being partially source-available and fully closed source at least twice. It's a similar story with usage licenses, with hobbyist and non-commercial access variously being granted and then pulled away multiple times.

On at least one occasion, the license was changed overnight leaving a large enthusiast community in the lurch.

Given the history, there's every reason to suspect that there'll be yet more rug-pulls in the future.

They also had a desktop version you could install at home before.

They don't promise anything "Open Source" here.

The bait and switch was around the “free” license for non-commercial use. They got lots of people using it and porting software to it, and then they revoked that free license.

Then they did exactly the same thing again a few years later.

And now, for the 3rd time, they are offering a “free” non-commercial license.