It's basically taboo to say anything positive about open office spaces online. There are many, many legitimately terrible open office workspaces in the world. Suggesting that open offices aren't always bad feels like an attack on those who are miserable in their open office. So it's safer to just never bring it up.
In the real world, a lot of people do enjoy open office style environments. They're probably the same people who went to their University's library to study in college or joined a study group so they could sit with others who were working on the same topic. Many (not all, obvious) college students choose these open, social study environments organically during college. It's reasonable to expect that they'd carry their preferences into the working world.
I have a theory that the more someone prefers isolation and being alone, the more likely they are to participate in internet comment sections and online forums. As a result, the deeper you go into internet comment sections, the more unanimously people rail against open office floor plans.
In a perfect world, we'd have a mix of companies offering both working styles and people could choose their preferred style up front. Anecdotally, I worked for a company that advertised private offices as a perk, but nearly zero of our candidates seemed to care. People tend to choose whichever company pays the best, regardless of the working conditions. I can understand why companies choose to save money on open office floorplans.