Scuba diving is a fundamentally dangerous and expensive hobby. I don't know if this will make a big dent in the cost of a dive. FWIW a snorkel and a pair of fins are pretty cheap. For ~$50 you can have a lot of fun swimming around exploring coastal ecosystems without needing to stress about signals, equipment, safety stops, or any of that stuff. This is a lot closer to democratizing diving than anything else.