In meetings in Israel, U.S. Defense Secretary Lloyd Austin conveyed to Israeli leaders that it’s important to observe international rules of warfare.
As Israel girds for a fearsome ground assault into Gaza, senior Biden administration officials are warning their Israeli counterparts to show restraint and avoid mass civilian casualties and a humanitarian disaster that could turn world opinion against the Jewish state, according to two current and one former U.S. official.
I don’t know the truth of the matter, these are internal things after all. But what you posted isn’t necessarily inconsistent with the article. It’s possible they were instructed not to say those things publicly, as your article says, but are privately pushing Israel to restrain themselves, as the above article says.