Hello, Darknesscapeee.
My account is constantly getting quarantined—every time I edit the page of any of my games, the game gets quarantined. That’s why I can tell you with 100% certainty that posting devlogs does NOT put your games in quarantine. I post a lot of devlogs, and my games still show up in search results, so don’t worry about that. Your games will only be quarantined if you edit the game’s page, whether to publish a new update or even just to fix a simple typo, so be very careful with that. But devlogs are totally safe.