Interesting read, but in the bit over a year I've operated my Flex 3000 and the several months before that with the Flex 1500, I've not once had anyone come by to tell me I'm splattering or causing noise in their receiver.
This is the way hams are. Few will ever complain about your signal unless it is unreadable. Your signal could be crap and you would never know unless you had a friend give you an honest evaluation.
A ham with a panafall will know right away if your signal is substandard. I was in the CQWWCW contest last weekend and I was amazed at how many CW signals had key clicks. really bad clicks up to 4-5khz wide. There were at least 10-12 I saw that were very bad.
I have seen the same thing with the digital modes. A while back I also did the CQWWRTTY contest. At least 20 or mores sigs were extremly wide because they were running AFSK with the gain too high.
I have seen SSB splatter up to 10khz wide.
I would venture to say that all these stations never had anyone tell them that their signal was crap.
So - just because a ham does not say your is signal is poor does NOT mean you have a clean signal.