Not sure how to answer this without being an ass. I can only speak from my own experience and I really do not care how others play or the general skill of strangers. If people do not meet my expectations I just boot them or leave. I go based off the if I can do it so can someone else. Though generally I also do not try to make assumptions based off factors I do not know so I get this puts me in a murky situation since everyone is different.
So on a personal level I really do not care what the community wants to encourage.
Though I will say sure it would be nice if the skill level of the average player goes up but that more so is the responsibility of SE in my opinion and not so much the community.
Though generally I would say on a personal level if I had to choose I would rather the latter be encouraged more over the former. I think if players tried to push their limits it would have a longer lasting improvement over just following the script so to speak. That is why as a healer I have no problem and will encourage people to test their limits and I will do so myself when I play. If people complain or do not heal me out of spite ( had this happen once it was honestly fun) it will not impact me cause I personally know what I can for the most part get away with while relying on just myself to sustain my own actions if that makes sense. So yeah I will always encourage what has the greater potential for the quickest kill since that is the metric that matters most to me and I find most enjoyable to strive for. Though I do get that is at odds for the general player base but I really do not care about the general player base I tend to focus on those in the group with me at any given time.