I agree that (4) could be modulated by the character of the community. The same is true for (3,5), except that, the direction is wrong. Old-timers are more likely to be professional EAs, and know more about the community, so their decreased prevalence should reduce problems from (3,5). And (7) seems more like an effect of the changing nature of the forum, rather than a cause of it.
I agree that (4) could be modulated by the character of the community. The same is true for (3,5), except that, the direction is wrong. Old-timers are more likely to be professional EAs, and know more about the community, so their decreased prevalence should reduce problems from (3,5). And (7) seems more like an effect of the changing nature of the forum, rather than a cause of it.