A duplicate is a duplicate regardless of age. It's true - more frequently newer questions are flagged as dupes of older questions, but in this case it wasn't appropriate.
The dupe question for yours is a canonical QA as to why one-click installer stacks (WAMP, XAMPP, etc.) are inappropriate in a professional sysadmin setting. HopelessN00b found your old question and marked it as a dupe of our newer, canonical question on this subject.
You will notice that he didn't just outright close your question - he locked it. The question is indeed off-topic, so closing would have been appropriate, but he (somehow) was able to find a bit of grace in his (two-sizes-too-small) heart and just lock/dupe your question instead.
