Over the last week, you may have been confused by asinine advice about what you should have accomplished by age 35. It's a meme based on a Marketwatch article that is basically 2018's version of "millennials can't buy houses because they buy so much avocado toast."
The Marketwatch article asserts that by the time you're 35 you should have saved twice your annual salary. If the math is confusing there, it's your salary but, like, two of it.
The article was originally published in early January, but it was a May re-promotion of the story that started the fire, according to Know Your Meme. The article contains lots of financial advice, but the May tweet from Marketwatch focused on the savings advice.