Instead, their website [1] is so full of bugs, glitches, incomplete features and instability that I wonder just what is going on behind the scenes. Are the third-party tools paying Meta to keep their own tools broken?
[1] business.facebook.com
It could be quiet quitting, but I don't attribute that conspiracy to every failed software business. Maybe it's just the recent news that TikTok is eating Facebook's lunch and that their stock has tanked, or that the Metaverse is a risky bet, or it could be simply ignorance of user's needs. Facebook being a data hungry giant, you would think they have insight into how & why people use their products.
What I would suggest is writing a blog post describing all your pain points, and distribute the link to every relevant FB employee you can find on social media. You might not get everyone listening, but it will perk up a few ears.
Nobody would point to Epic, Cerner, Salesforce, Adobe or Microsoft for "best practices" and they shouldn't do that for Facebook either.
Interviews are about being fast with a working solution. Guess what that does to a product.