I’ve seen Amsteel burn while hammock camping. I was using a tree strap made of 1” Dyneema webbing connected to my hammock via a Becket hitch to 7/64” Amsteel continuous loop. I didn’t fully seat the Becket hitch and upon sitting in the hammock was slowly lowered to the ground. This was not a quick, violent loading and failure. It still burned about 1/3 of the way through the Amsteel.
Having said that, I make my own Amsteel Utilibridges for my saddles. I use full bury 1/4” for the bridge and 3/16” continuous loop for the adjustment. I have the prussic backed up 100% of the time.
As far as manufacturers selling stuff that isn’t safe... most treestand manufacturers include safety harnesses that are a joke. Lineman’s loops with one row of stitching. Made in China. But they get that 100% seal of approval from TMA (also a joke) because they have a belt, leg straps and shoulder straps. Of the 20 most popular rock climbing harnesses, I would be willing to bet that NONE of would be approved by TMA. Think about that for a while.
Sorry for the tangent. I actually agree that some people who casually browse the forum might come to the conclusion that Amsteel is the infallible panacea. We probably need more discussions like the OP has initiated. Im with [mention]always89y [/mention] though. I have used and spliced Amsteel for decades and trust it and myself in certain saddle situations. I wouldn’t sell it to others.