Your link says exactly what I said.

Pathetic.
Sitting at home when the Cops show up looking for evidence is not within the realm of the above article.
Maybe you should read the whole article.
"Anonymous tips and/or confidential informants often form the basis for police surveillance and search warrants."
"Courts utilize a totality of the circumstances analysis if the prosecution attempts to use an anonymous tip in its case against a criminal defendant. In most situations a Court will not prohibit the use of an anonymous informant where the informant provides information regarding future movements of a suspect which actually occur.
The introduction of this evidence, however, would require the prosecution to produce a witness, more than likely a police officer, to testify as to his receipt of the tip and his observations based on that tip. "
You claiming that anonymous tips are not evidence and not admissible is factually incorrect and as I bolded above, the person who provided the tip doesn't necessarily have to testify. . As I stated earlier, the tip is often the beginning of the investigation which ultimately leads to a search warrant or arrest.
You are presenting some picture that cops get a tip and based on that tip alone get a warrant. If that were true then yes you have a problem with due process, but in this instance there is no evidence (that we know of) to show the cops had only a tip and nothing else.
I admitted where I was wrong in another post, lets see if you are mature enough to do so here.