The point in 4 is only valid in certain situations -- it bears no resemblance to a drive-by shooting or a group indiscriminately spraying rounds into a crowd or opening fire in a crowd. As to the "to anyone [who] has fired"... Oh, my. I humped a 60 and a 249 for years. I'm pretty comfortable with their capabilities and characteristics. Muzzle rise and difficulty in controlling them are greatly overstated. Don't know enough about the svd, to ill take your word for that one. An untrained guy with a 249 could mow down a crowd in seconds. For anyone who actually knows the 249, that's a scary weapon to have in the wrong hands.
ETA: For those who don't actually know the 249, here's an example of the crazy, uncontrollable muzzle rise:
[video=youtube;2OZJ5icm5i4]http://www.youtube.com/watch?v=2OZJ5icm5i4[/video]
Some are just better for this than others. Like I said above, the M14 was about useless in full auto. Take that same 7.62 and fire it out of an M60 and at full auto it runs great. Not all full autos are created equal. The M4 is OK at full auto but not great. It does much better at single and short burst fire.