Not people doesn't mean that they must be bots, IMHO it means not people who are having opinions but social media workers or entrepreneurs who are having opinions based on metrics that fulfill their KPI which are often stuff like increase engagement, increase followers, increase revenue, get a talking point into the trends, make people talk about a brand or a politician etc. Many large accounts on Twitter are openly corporate accounts of some social media companies and many others are freelancers.
People are not having concerned citizen ideas 24 hours a day everyday, those are obviously professionals who are having concerns about the society, race, jews etc in order to fulfill some goals. Those are not real people, you won't be able to change their minds with argumentation because they don't speak their mind in first place. That's for Twitter of course, in other places they have other productions like "tradwifes" on Instagram or reviewers on Youtube. They are all businesses or indies trying to become businesses. They all use analytics and do A/B testing to acquire and steer their content ideas to the platforms liking. Platforms decide what will be shown to the users, they of course need to run their own business and they also pursue their own KPIs but as cost of doing business they allow other businesses to insert their KPI into the algorithm in exchange of money or favors. For example when there's a new movie release upcoming they can pay the platform to boost engagement on content about their movie, platforms also incentivize the creation of such content by paying certain influencers if they create a content that feeds into the campaign(i.e. if they do a dance from a movie that is being promoted they get paid if their dance video meets the quota). They can do all this for consumer products but they can do it for political stuff too.
Almost no genuine content, its all one big reality show all orchestrated by the big tech. I mean sure, there is genuine content but they are all fillers or trying to win against the flow.
just google it ( https://www.google.com/search?q=how+much+of+twitter+is+bots+... ) and then go through what you believe is right and makes sense to you. I don’t use social media myself for over 6 years now but when I take my wife’s phone I haven’t seen many people anywhere other than influencers :)
in the old days there were actual people, today most “social” media is not people