I both agree and disagree with the conclusions in the title....
I agree that for many people, they're happier, and likely more productive, working from home.
I would also agree that for many different people, working from an office makes them happier/more productive.
It entirely depends on the job, who you are, and the work culture. Some places are toxic and working from home to get away from it is helpful for job satisfaction. I've known people who simply focus better when they're at the office since they have a lot of distractions at home. I know for me, the opposite is true. at home, I'm in control and can limit exposure to distractions, and I can be more productive, more comfortable and overall less unhappy with my job.
IMO, this discussion is less about what companies want, whether work from home or hybrid, or in office .... The main conclusion that we should be driving home is that different people need different environments to do their best work, and be happiest with their particular job. To put it simply: workers need to be able to choose.
Until we're at the stage where employers care less about how, and where you do the work, and they care more about the work getting done.... We're going to keep going back and forth on this.
I like to work from home. That's me.
I know people who prefer to work from an office. There's plenty of people who feel they work best from the office.
There's plenty of people that need to mix between home and office work.
Bluntly: as long as you can do the work from where you're working, and how you're working, the rest should be flexible. We're (presumably) adults and professionals. If we're given work and we're being paid to do the work, then we will do the work. We don't need to be constantly supervised by middle management like toddlers.