What part of UNLAWFUL ENTRY, the finding of the court, do you NOT comprehend?
They ruled on on issue shown here. They ruled that EVEN IF the entry had been illegal, the perp does not have the right to decide that, and commit a battery on the LEO in the hope the entry would later be found to be illegal. It cites the other remedies available.
It goes on to describe the many ways LEOs can enter absent a warrant.
That is why it is so important to read the entire piece very carefully, especially when it is from a one-sided source.