If it had a fan for unrestricted breathing it'd be great. The hot and humid air building up is what I hate about facemasks. I had some very bad experiences in the past where I nearly choked so it's a bit traumatic.

Unfortunately they're still required here in public transport. I've been looking for some fan -supported models but the only one I found is the LG and that's too front heavy.

Accidents happen of course, but I'm personally skeptical that the occasional accidents are responsible for the majority of masks "in the wild", as opposed to intentional littering, e.g., dropping the mask on the ground when someone walks out of a building.

Whatever your opinion of masks, I don't think that public health policy should be determined by whether people are littering. We should take measures to stop littering in any case. Also, I see no reason to prioritize bird health over human health (though we generally shouldn't have to choose one or the other).