Look at how well you're being treated now without a union. Look at how well union workers are treated versus their no union worker equivalents. Imagine how much better you'd be treated if there was a union versus your current no union status.
I'm pretty confident that the vast majority of union workers are expected to work from their employer's business premises. Workers should unionize if they're being mistreated, but it's not a magic wand that means I can get whatever working conditions I'd like.
I don't understand why this has been so downvoted – although it might be true for now, there's a deeper truth that it's true that any union benefit has to be fought for and constantly defended between negotiations. (Which is why unions usually have legislative and political advocacy arms to codify these benefits – so they don't have to waste barganing power on them.)
Allowing people to work from home, and then yanking that back even after studies prove happier workers and better productivity is mistreatment in my opinion. Especially when it's malicious and arbitrary when they do it in hopes that you will quit. Our quality of life plummets when we're dragged away from our families and forced into long shitty commutes to sit on zoom in a cubicle all day.