"Fame" in Star Wars is a pretty subjective thing. Think about how many people on Earth, our single planet, are extremely famous in some places and totally unheard of in others. Americans tend to think that our news is the only news that matters, that it's played everywhere on the planet. It is not. There are people who are extremely famous in Japan or France or Brazil who we've never heard about, and a lot of our TV stars and big-name political figures and household name actors aren't even a full thirty seconds on the news there.
In Star Wars, where we have an entire galaxy to fill, it's even more compartmentalized than that. A trillion-trillion Earths, each with the exact same subjective fame. To acquire a reputation on a galactic level, you have to do things that interact with every single one of those galactic nations in a meaningful way, repeatedly. If you ever stop doing this, stop making yourself a Beiber-level media darling, your reputation decays. People forget about you.
Darron Wraith and Ashin Varanin would gain reputations, due to being very prominent members of very prominent governments during a high-action period in the galaxy. They were at Roche! They had this big fight! She was the Empress and he was the Grandmaster! And then neither one of them does anything very important for a while. Darron retires to a small farmstead in the middle of nowhere. Ashin leaves the civilized galaxy to start a kingdom in the Outer Rim/Unknown Regions. The Holonet stops broadcasting their actions, constantly, every single time they take a dump.
It is extremely easy to completely disappear when you're dealing with the entire galaxy. It is comparably difficult to make yourself into a household name not in just one country, or one planet, or one nation, but the entire galaxy full of those nations, which are full of those planets, which are full of those countries.