Very glad to read this thread. I had a situation come up a few weeks ago that I considered posting/asking about, but was hesitant to do so thinking I may have been at fault. Still not sure, actually, but since the waters seem to be a bit murky anyway, here goes...
I was approaching a local untowered field that has a pretty busy maintenance facilty onsite..traffic isn't usually nuts, but it's not uncommon to have a plane or two in the pattern. I was approaching on a 310 deg course from my home field, which put me directly on course to enter a left downwind for 13. Made my first call 10 miles out, then 5. Heard another plane advise they were turning left base 13, no other calls, no other aircraft visible by eyeball, but one showing up northeast of the field about 5 miles out via adsb in. Looking, but couldn't see it. I made another call at 1 mile, then advised I was on left downwind for 13 when I was almost abeam the opposite end (31) of the runway, all the while watching for the traffic blip that continued to get closer w/out making a call. She finally made a call ... "cessna xxx on a 45 for left downwind 13"... about the same time I saw her. Not at all a close call, but it would have been if one of us hadn't given way. I broke off to the right (still plenty of room to do so), and told her I'd do a 360 to give her some time. She got back on the mic and smugly said "It's always best to enter on a 45." Not "Thank you."
I didn't post because I know a 45 entry is preferred, and I always do the midfield-at-500-above-tpa entry, but this time I figured, with all the radio calls I made and heard, my ability to see the entire runway and traffic in the pattern, and the fact that my course put me on a perfect left downwind anyway, I'd be safe as long as I mad my intentions clear by radio (which I did many times) and in effect be IN the pattern before anyone entered on a 45 and cut me off.
No harm done, but I didn't appreciate the smugness. Was I wrong? If so, please tell me...always trying to do things right,