Spotify has 5,000+ employees -- I wouldn't assume for a second that it's the tech workers doing this, I suspect it's probably HR and marketing and so on. It's a big bureaucratic organization.
I like to think if I was at Spotify, and I saw people holding the company hostage like this -- threatening to quit (or whatever) if they don't get their way -- that I would stand up and threaten to do the same if they do get their way.
If the only way to remove the ability of these people to make threats is to create a lose-lose situation for your employer, then you have a responsibility to do that. If enough companies see this happen and are forced to navigate a needless lose-lose situation, maybe we'll see companies take a harder position against advocacy and activism and politics in the workplace. If all else is equal, hopefully they'll be forced to take the position that they would have taken if nobody threatened anything; they'll fall back to their actual principles.