Mirror, I know the bus company of which you speak; I take that bus, too.
I’m a guy, and I agree 100% with everything you’re saying – in fact, I’ve seen the same things.
Buses are not made for tefilla since proper kavana and comportment, even at a minimum level, is virtually unattainable. I get up earlier to go daven, or daven at home. I do not daven on the bus at all.
Nor is having davening on the bus in general a good exercise in kavod ha’b’riyos. There are almost always other people on the bus who are not participating in a minyan that just want to quietly read, sleep, etc in preparation for the long workday. Bus minyanim tear that time away from the individual, although mitigated somewhat [at least for shacharis] by having separate ‘minyan’ buses. This is more true for the impromptu mincha or ma’ariv minyan than for shacharis, as I wrote above, though I have had the pleasure of having morning ‘minyan’ bus riders coming aboard the ‘non-minyan’ bus and holding a minyan there.