I don't usually truck conspiracy theories, but I really wonder if that whole "broken glass" thing was completely staged to get attention in the news.
Similar with the Peloton ad. Some marketing executive: "Lets make an ad that'll just slightly controversial enough to potentially trigger a few oversensitive SJW types, which will then trigger a bigger backlash from the right wing / anti-PC crowd (maybe a few will rage-buy it just to "own the libs"). Either way the manufactured controversy will get in the news for days on end during high-shopping time."
You really could not have planned the Peloton ad effect, it mostly came down to people having a subconscious reaction to the expression on the actress's face and then extending that reaction to the already intense social discourse around luxury goods, fitness industry, etc.
It's actually remarkably difficult to predict how things will be received by the public and what will go viral or what kind of messaging will be attached to that viral content as it moves through the collective space.
It's much more likely that top PR and marketing teams mobilize rapidly to try and capitalize on anything that grabs public attention.