It's a language thing. Every single question on the StackExchanges platform implicitly is asking for help. In the end, this phrase is just clutter and can be removed.
In addition to the other answers: In some cases just editing the question (removing the clutter, helping with formulating the question) and answering it may work.
Just remove the "Can you help me?" (it's just clutter) or internally translate "Can you help me with X?" (X is the rest of the post) into "How to do X" / "How can I achieve X?" or "What is the reason for X?" (depending on X) and then answer and vote according to that.
The questioner will hopefully see the actions and learn to ask more concisely next time. One might add a comment reminding the contributor to be more specific with formulating a question and leaving out the clutter.
In some, maybe most cases, the actual question will be unclear (with or without an explicit "can you help me") and should be closed. But if the question without the "can someone help me" is still a valid question one should consider improving it and answering it.