Well I think the issue at hand here has to first be defined. I could end literally any post with a general plea of "please help". That doesn't invalidate a post or require its deletion. That's silly of course. So therefore we need to not think of "Can someone help me?" posts as a way of phrasing a post and more as a type of question.
The fallacy here is that "Can someone help me?" posts need not contain the actual phrase. The theme of these posts is that they don't try to solve their own problem. Consider this "mock" example.
[code dump]
I keep getting this compiler error.
[insert compilation error]
Why does it occur?
That question suffers from lack of effort. They don't attempt to interpret the compiler error.
Another kind is when someone asks "How do I do X?".
Note that all varies. I'd argue that asking "How do I re-implement this code without using ____ type control statements?. Is possibly valid. It's even more valid if it is truly impossible to do and can lead to interesting statements about said impossibility. After all, if it isn't possible there won't be an attempt that isn't in vain (and therefore maybe not worth sharing).
On the other hand, asking how to implement a 3D renderer from scratch... is not reasonable.
The ONLY exception to the things I have written so far is when the asker is also answering their post right away. I.e. the post is just a way to share a useful piece of code. That's fair, imo. After all, why would a person sharing code write an attempt in their Q&A question? That would surely be a waste of effort. XD