Y'all really need to read things. The underlying study here wasn't some corporate propaganda trying to trick you back into the office, it's a look into the ways work from home can erode boundaries between work life and personal life. It's not advocating that everybody should go struggle through traffic to get to an office every day, it's suggesting that doing something like taking a walk before and after work can help keep the sense of separation traditionally created by having to physically travel to another place to work — something, it's worth remembering, that doesn't equal driving there.
Work from home has its issues, especially when it comes to trying to create boundaries. Problems like 24/7 availability expectations, attempts to regulate what you do at home as if it's an office, and constantly feeling like you're in “work mode” are legitimate and people discussing or studying them are not all agents of a corporate conspiracy.
If you want to actually improve the world instead of just getting outraged, then you're gonna have to actually consider the potential downsides of solutions so you can figure out how to deal with or mitigate them, sorry.