Yes, but that's not the point.

ELI5 means Explain Like I'm 5 [ys/o]. It's not meant to be an info-dump, it's meant to be a basic explainer for someone who is interested to know about a specific thing, but has no knowledge of the surrounding subject matter.

Would you point a 5 year old to a wikipedia article and tell them to read up about DNS's. No, you'd explain it to them in terms they understand.