Last I heard Boox violated the GPL licensing by using a modified version of the linux kernel and not providing open source for their modifications. I’m having trouble finding any recent updates on this, if anything has changed in the last few years. I’m also not familiar with licensing stuff in general so maybe someone more knowledgeable will come around and give more details if there’s any more to it. Quick search shows some privacy/telemetry concerns as well that I didn’t look into. And some built in AI stuff with some of their hardware that some people won’t like