That is one of the few mistakes our founders made. Allowing the court to ignore cases.
Obviously you didn't read the article, nor understand the summary.
The court did not ignore the case. There is a procedure. It starts at the circuit court. Then it goes through the appeals court, usually first with panel of 3, then the full appeals court. The SCOTUS is the final level of appeals.
The process works as a vetting and refining system. The SCOTUS only gets involved in situations where different appeals courts have used differing standards or when there are certain controversial or seemingly contradictory situations. The district judge wanted to get around the procedures. It is very rarely successful except in cases where urgency is required and the implications are severe, such as the 'hanging chads' controversy. The court disagreed, wanting the case to go through the normal process.
As with every issue that is a political hot topic, the SCOTUS will tend to wait to give congress a chance to address this before ruling. Often when Congress amends the law while a case is in progress, the appeal will simply remand it back to the district court with an order to follow the revised law rather than the old law.
As of now, in the DC court, his initial ruling (that the bulk collection is unconstitutional) still stands, even though he put in a stay (delay before carrying out the order) in order to allow for appeals. If he felt so strongly he could have not accepted the stay, which would mean the government would need to implement the order immediately and the feds would have needed to petition for an emergency stay from a higher court.
Right now the ruling is that the collection is unlawful. With the appeal denied so far, that decision stands. That is what we want, so don't complain about it.