I'm not qualified to make statements as to the safety of the designs. And my comments have been limited to some odd personal characteristics. However, there do seem to be some issues with regard to reliability in some products. I'll let the experts flush all that out though.
If you go around presenting yourself on internet as a thought leader and profit, then I'd say that more than opens the door to comments myself and others have made.
I count on my HC buddies to help me decide where my money might best be spent. I trust completely that they have my back, and I've got theirs.