Some manufacturers make all kinds of unjustified health claims, none of which are backed up by published research. Look at the supplemement industry and many of the claims made there.
We, as a society, know masks are helpful, and N95 type masks are very helpful. N95 masks and surgical masks have been researched, verified, and monitored as they are made.
But I do agree, that for most of us who are not actively involved in the care of Covid 19 patients, the main reason to wear a mask is to help protect our fellow citizens from our own fomites. Our masks probably do reduce our risks of contracting Covid mildly, but pale to the effectiveness of real 2 meter social distancing and avoiding interior public spaces.
The Respiray devices shown above make no pretense of controlling the wearers fomites at all. They may even be broadcasting them to others more effectively, with the air flow from the filter passing over the wearer's faces.
I guess if folks want to wear a Respiray in their own home, go for it! But not in public spaces.
I hesitate to mention that surgeons wears surgical masks during surgery to protect their surgical patient, and the surgical field, from the fomites of the surgeons and their assistants. Not to protect the surgeons from the fluids in the surgical field, except under very unusual circumstances - In cases the surgeons are at risk to be infected by their patients , they don't wear masks, but usually full helmeted hazard suits.. .