High flow/purity lab style hydrogen generators for MHT?

Is there a fundamental problem with using a high purity H2 generator like this unit on Amazon:

https://www.amazon.com/Happybuy-Hydrogen-Generator-Pressure-Automatically/dp/B07JG6G7LW/ref=sr_1_1?keywords=high%2Bpurity%2BH2%2Bgenerator&qid=1580291325&sr=8-1&th=1

From my research they can produce hydrogen purity and pressure much higher than some more expensive H2 therapy devices. Of couse I am not endorsing breathing high purity hydrogen at a high flow rate but those things can be controlled by any responsible adult, along with combustion avoidance.The higherflow rate would be superior for saturating water and even baths.