Captain, you can think what you want. But first, do a Google search on cannabis and lung irritation. Then another on cannabis and asthma. Also cannabis and pulmonary inflammation. You'll find more references than you listed above proving just the opposite. You'll also want to visit the emergency rooms and pulmonary wards and respiratory therapists who worked with heavy cannabis smokers.

The deal about cannabis is this. THC is a wonderful bronchodilator and expectorant. But smoked cannabis itself is harsh and irritating and contains a lot more than just THC. Ask smokers who use it heavily. Ask me, who smoked it very lightly this past summer. It aggravated my asthma to a significant degree. This is why many savvy cannabis users, particularly those who use it medicinally, choose to vaporize it or eat it.

Like I said, you're welcome to your own opinion. I'm basing mine on what Iv'e read--and I've read a lot--and on my own experience and the experiences I've read from many heavy smokers here. More people need to understand the not-so-subtle differences between the great benefits of the isolated THC and CBD active compounds in cannabis and the potentially very irritating effects of inhaled burning cannabis smoke.