Unfortunately, Bungie will be removing the Chronicler title at the end of the Season of Arrivals. ... Players largely expressed confusion and disappointment with Bungie's decision.

Is chronicler getting vaulted?

The Chronicler is a title being vaulted.

If you want to get Chronicler title and you have done at least half of the stories of truth to power, you MUST do this glitch: Link to glitch, and get 2 pieces of lore every 3 weeks until beyond light.

Can I still get chronicler?

So even if you've got all the lore collectibles you need from Io, Mercury, Mars, and Titan, you still won't be able to get Chronicler if you can't complete it before Beyond Light due to, say, the time gates on the Truth to Power lore book.