It has gotten a bad rap on the web forums, but in my opinion that is not deserved.
No matter what is said in favor, a significant number of folks will jump on with negatives.
So, I am not dismissing the folks who go negative on it, but, those comments are taken with a grain of salt since some folks are not metal workers or used to working in industrial settings.
Is this particular method that much riskier than any other? Not really, unless you are blind to the risks.
When used as intended, there have been too many trouble-free runs with this to say it doesn't work as well as any other method... when properly done.
To be fair, I have un-stuck many dies for folks so the risks are worth mentioning.
I have never had a problem with it and treat it like another tool in the tool box. In some places, this stuff makes the most sense, in others it is something else. YMMV