Letting random people to freely roam around workshop seems incredible reckless, dangerous, and like a pending lawsuit! The glassworkhop referenced earlier is working with liquid that is over 1500c! It can amputate a hand in seconds! The same with carpentry, my circular saw does not even have a safety conductivity switch!
There is not much danger that a random person will come into your garage and put their hand under your circular saw while you are working it.
Nonsense, you might want to check both the liquid and the temp claims with an actual glass blower.
That quibble aside, glass is a joy in the sense that it doesn't spit and doesn't stick to the skin unlike molten metal.
Further, I know many glassblowers who have worked small hot shops for decades with members of the public mere feet away, several with no barriers to stop the public from reaching out to grab hot glass ... something that still hasn't happened to any that I've heard of / reported on group, etc.