From Buddhas point of view, is what is common called preaching unskillful not benefical? Food for thought:

It's in modern or western world common regarded and even broadly taught that such as preaching, in more dhammic words, giving a sermon, is unskillful, not the way Dhamma is taught.

Now my person like to ask if that actually is really true?


Is preaching to be regarded as the wrong way?
If not generally, where would be the point that preaching, teaching, giving a sermon might turn out to be not of use (either for giver nor for receiver)?
What might be a possible "psychological" reason, or cultural reason for aversion in regard of sermons? 
Under which circumstances a possible gift turns out to be a kind of red flag?


[Note: This is a gift of Dhamma, not meant for commercial purpose or other low wordily gain by means of trade and exchange]
"Preaching" in the sense of "proselytizing" is kind of unpopular among Buddhists (see also How are Buddhists supposed to spread Buddhism?).
In the suttas I think that the Buddha tended to teach people who asked him a question or people who challenged him (and didn't try to impose his views on strangers), and he often taught by asking questions.

But "preaching" in the sense of "giving dhamma talks" is normal; and (Dhamma) is I think defined as one of the proper topics of speech for a monk.