I mean, with any social media that feeds you content according to a non-disclosed algorithm, can you ever be sure what you're looking at isn't an ad? (If it's not content from someone you know irl)
It's basically all ads if it's not someone you know. That's why I've never understood why people have like 1000 friends on Facebook and Instagram. I don't want anyone I don't know in person appearing on my timeline on those sites. But meta forced it upon me anyways, so I just stopped using the sites.
There is nothing wrong with Instagram as a concept. The problem is Meta's software and policies. If you are truly interested in following certain celebrities in it, I would recommend searching for FOSS projects that allow you to do that without Meta software or joining their eco-system.
I haven't complained about the extra ads added to my feed, but getting uninterrupted ads would definitely reduce the amount of time I am on it, for sure.
Serious question from someone who isn't terribly technologically literate: if other websites adopt this feature, how will ad blockers adapt? For example, would they be able to fool the site into thinking that you've viewed the ad before you actually scroll down?