“I keep posting this over & over again”
That does not make you a doctor, necessarily, and perhaps I have never seen those specific posts. I don’t read everything on this site. That being said, the fact that you read something, does not make it the prevailing conventional wisdom, nor does it mean that it is the case for most people.
I have never met anyone suffering from bronchitis who did not require at least one and sometimes a double course of antibiotics, as the condition can last a very LONG time. I was never put on an inhaler, thankfully, but my daughter was. we still both had to take a Z-pack, and i ended up on something even stronger after that.