Public Transport Ettiquette

I recently went to Australia for a couple of weeks, which is why there's been a break in these posts. 

On the flights and trains I took, there were a number of people open-mouthed coughing, sneezing and had sniffs that sounded like a blocked sink, but almost no-one was masked. The day after arriving at my destination I tested positive for COVID and wound up spending 5 days in isolation, missing most of the event I was going to. Same deal on the way back: I picked up a cold.

Having spent a little time in Japan, the norm there is to mask up if you are ill and have to go out: it's just polite. Next time, I'm flying masked as a matter of course. Although, a Hazmat suit is also appealing, given how unwell some of the people looked.

Then there's the class of people who think it's OK to publicly use the speakers on their phones while they yell their end of the conversation, or play media - loudly: it's akin to smoking, where one person's act influences many others. My personal theory is that it's grossly insecure people trying to assert their dominance over a space, and that society has become so permissive that a high degree of self-entitlement is tolerated. In one case I saw a young women greet a quiet, courteous request to turn off her phone speaker in a designated quiet carriage with a screaming tirade of abuse: she got off at the next station before there was any official comeback: there are cameras. 

Just how entitled and inconsiderate do we have to get?