Is there more info about this? I could only find Chinese forums like https://m-weibo-cn.translate.goog/status/OdaBMza1L?from=page_1005052963774131_profile&wvr=6&mod=weibotime&jumpfrom=weibocom

The chips (basic TTL logic, perhaps) are all DIP. This may predate the term “open source”.

Yes, get yourself eclipse glasses, a pinhole projector, a floppy disk, digital camera or whatever allows you to observe the eclipse safely – no phenomenon is worth risking your eyesight over. However, the consensus is that you can watch the sun flares without protection during totality. The totality lasted 0 to 4 minutes depending on your location.

…and ignore one of the coolest things there is to see on the sky

A solar or lunar eclipse?

Finally, I can calmly watch the performance of my stock portfolio

If you don’t want to use the potentially unstable Nightly, Dev or Beta, you can use Fennec (stable builds with dev features).