Here's my impression of the sequence of events, based on the blog post:
1) You post an article which includes several facts that are taken directly from Joshua's article. No credit is given to the original author.
2) Joshua publicly calls you out on this.
3) You quickly edit in a credit and a link to the original article.
4) With the awareness that future readers will see this credit and assume that Joshua is making an unfounded complaint, you send a series of aggressive tweets attacking him for bringing this issue up.
Now, it's possible that this isn't an accurate timeline, and now would be a good time for you to clarify what happened. But understand that the issue here isn't (entirely) the fact that you paraphrased another person's article; it's that it looks like you didn't give him credit, acted very deceptively to conceal that fact and save face, and that you did so in a particularly childish way.
The facts are one thing. What's really damning is the structure in which those facts are presented. If you compare the original appearance of TNW's article with Joshua's article, the paragraphs are almost identical, with a few words changed here and there.
1) You post an article which includes several facts that are taken directly from Joshua's article. No credit is given to the original author.
2) Joshua publicly calls you out on this.
3) You quickly edit in a credit and a link to the original article.
4) With the awareness that future readers will see this credit and assume that Joshua is making an unfounded complaint, you send a series of aggressive tweets attacking him for bringing this issue up.
Now, it's possible that this isn't an accurate timeline, and now would be a good time for you to clarify what happened. But understand that the issue here isn't (entirely) the fact that you paraphrased another person's article; it's that it looks like you didn't give him credit, acted very deceptively to conceal that fact and save face, and that you did so in a particularly childish way.