Anyone ever heard of Hydrolock watering systems?

https://hydrolocksystems.com/

I have heard good things about them but I have not seen them in use, anybody ever use them before? Have a review they can share?

I was curious if someone would still need to use rocks, stones, etc on top of the soil to prevent holes, cause it seems like it sprays water directly at the base of the plant.

Or perhaps it isn’t strong enough water pressure to allow holes to create? Not sure… curious if anyone can shed some light on the product and experience using it….?

I have not heard of them before, but I will be doing some research and report back if I find anything.