Either you go to the Rabbinate and ask them to certify you, or you chose not to go to the Rabbinate. Thre is a concept among some Jews, at least in this town, "b'chezkat Kashrut" wher you trust the person although they may not have a certificate. That Haaretz has never heard of that concept, well its either that they are out to trash Kashrut as an concept in Judaism, or the writer never heard of about eateries whose clientrele go there becasue they trust the owner not to offer them non-Kosher food. Some issues are so trivial there is no point to make a news item relating to them, but it would seem anything that deals with Judaism gets front page treatment and usually its slanted in a way that disparages some Traditional value.
Merkel says refugee crisis as challenging as reunifying Germany (Reuters)
from the article: Tiberias eatery doesn't need rabbinate to say it's kosher