I think there'sthere are a few different reasons - ItsIt's one of those things that's less than obvious. You're new, you're here for help, and your entirely on topic-topic question gets closed as a duplicate - sometimes even before you get an answer.
Contrast this with many new users who post multiple identical answers rather than flagging to close. Duplicates are not something a new user will get easily.
I've personally joked about how the duplicate suggestions in the title workswork better - so there's less of an excuse, but itsit's still something less than obvious to a new user. While search does suck, the most obvious dupes are obvious - and if it's the same problem with a different wording, it helps searchability.
I've often chosen to suggest differentiating a question from the duplicate target. I guess its balancing the immediate payout of answer(s) and reputation for folks who have asked and answered there, and the broader goal of building a knowledge base.
There's no quick fix - literally people just have to get "this is how it works" or decide on a threshold of duplicity that as many people are happy with as possible.