Unless your don't want to, but you are obliged to use IG because your business focuses on a demographic on which IG has a monopoly (the 15-25 demographics in the EU).
I'm sure there are worse jobs than using Instagram
There's a difference between using Instagram and having to wear a Bikini on Instagram even if you don't want to.
Nothing worse than owning a car repair shop and having to force your mechanics to wear a bikini for Instagram ads. Imagine having to have that conversation with a bunch of short tempered hairy dudes
Nobody is "obliged" to use it.
You can also buy ads if you want to show your posts to people, like any other business does.
To be fair, the linked article does suggest that this effect occurs for ads as well as organic posts.
Where's the suggestion that it applies to ads? The only coverage is 2 un-sourced instances of the ad creative review algorithm falsely flagging the content.
That's where models, brand ambassadors, and influencers come in. It's not like lifestyle business just found out that sex sells.