It always made 100x more sense to me on some factory floor in the early 20th century than it does in a tech startup like environment in 2020, plus some labour jobs in between.
I can just imagine the thousands of additional mandatory meetings across the entire company, the needless costs, and hoop jumping that will be added for very little ROI. But because they see gig delivery workers facing shitty conditions under weak contractor and unemployment law designed for a past century, so they think it's justified and want to start it somewhere.
The laws that get passed that make non-union members pay dues even though they volunteer not to be part of the union is the kind of stuff that drives me crazy. Or how they make it impossible to fire egregiously bad workers. Or how in the small town I grew up in these union jobs were coveted and hiring was super nepotism driven, you had to know the right people to get the job - which to me is the opposite of "diversity and inclusion", which is (unsurprisingly) the 2nd bullet point on their political union website, right after "equal pay for equal work" which is a statement riddled with mythology over data.