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.
Meta is the worst company, run by the worst person. It's a shame too, because they've completely destroyed websites that used to bring us together across great distances. Now their sites are just a garbage fire. What a loss.