Mimics & Mirrors
Mimics mirror the subject of their choice. In some fashion or form, a mimic might replicate the behavior, the words, or the image of another person. For some it is entertainment, but when it comes to content, it is pure plagiarism.
The digital world of publishing makes it much easier to do as you wish. Content can be produced and published ad nauseam. The unsavory part of this is the potential of others violating copyright law. Of course, there is the moral side of this offence – stealing is a cardinal sin.
Yet somehow, there is growing discord with the creators online. How do you avoid copycats? When you publish your work, you do so at risk. You might be criticized terribly, you might not even have an audience, or you might have persons skilled in "copy and paste" taking note of your work. Those is risks you take when publishing online.
It's not right nor is it fair, but what are you supposed to do? As a creator, you have taken an unofficial oath to be authentic. That authenticity extends to honesty and openness. You may take influence and inspiration from others, but you vow to create without infringing on someone else's rights.
When something is so good that it should remain unchanged, then make sure the credit the creator. Wouldn't you appreciate it if you found yourself referenced in another creator's work?
In the end, mimics can only replicate others. Eventually they run out of tricks and cheats. When the audience sees a pattern – repeat offences and repetitive work they will distance themselves from the imposter.