Ok, so the whistleblower should suffer some kind of consequence for not following procedure, but why should that affect the content of the complaint? If the complaint alleged a serious thing it still needs to be heard and investigated.
In your world, everyone who accuses someone of a crime should be shielded from consequences via anonymity?
We have whistle blower protection laws that punish anyone whose actions rise to the level of retaliation. Beyond that, anonymity is NOT part of the process once the report goes beyond the internal investigation -- in this case, the IG.
And, yes, if the person was SO concerned about remaining anonymous, he/she/it/they would have not contacted Schiff's office. He would have called the hotline and asked ANONYMOUSLY what the process is.
You act like these are children. They are adults with years of gov't service. They know not only the process, but also where and how to ask questions.
Stop pretending someone who wants to report THE PRESIDENT OF THE UNITED STATES OF AMERICA has no idea what they are doing and what it means.