I think it has a lot to do with Instagram esthetics and (under-the-radar-proposed) user behaviour.

• You are encouraged through suggested posts on insta to make everything about you look perfect, so your ig becomes in a sense your own advertisment. That is not so much on FB. FB was always life as it is.

• Instagram users are somehow not encouraged to post comments that much, rather to like, which reduces the likelihood of anyone ruining that image of yourself you are creating. Again, this is different on FB.

• Also, there are no groups, no communities on Insta, so users cannot connect in the same way like on FB, so there is no negative political or other association to it.

For the record, I deleted both at the same time 2 years ago. WA I still have but prefer Telegram. Which I could ditch WA as well. Telegram is far more advanced.

• Lastly, if you think about it, Mark always was and by this day remained the face of Facebook and Facebook only. Rarely anyone ever mentions he is also behind ig. And we know people - they tend not to think about stuff which aren’t mentioned.