I agree that sometimes it was really a dupe. Or even that most of the time it's a dupe. But when the answer was written in 2011 with the latest update in 2017, maybe it's worth reopening the question because there's probably a better answer in the last 6 years.
Even in that case, you don't need a new question. You should instead just edit and/or post a new answer to the old question.
Though SO has made some small progress on this problem recently by changing the default sorting algorithm to no longer prefer old, entrenched answers over new, better ones.
Really if I want and answer, I usually ask a question... I'm confused.
This truly is a new question because what is really being asked is what was the breaking change that occurred in $FRAMEWORK between the original question was answered and this latest version.
As far as I know the original asker owns the question, so I, modern asker, can't edit it asking for a modern answer or de-select the selected answer for being now wrong or out of date.
The sorting has also been recently changed, to no longer strongly favor the checkmarked question the original asker back in the day liked.