[Pseudoscience-is-malarkey (OP)]

The internet won't give me an answer.

[RD]

Only two Americans die per year from toppling a vending machine ...
https://www.theguardian.com/theguardian/2010/dec/07/things-likely-kill-than-shark

Vending machines outnumber pianos, so death by piano has to be less likely that that.

[Bored chemist]

Only two Americans die per year from toppling a vending machine ...
https://www.theguardian.com/theguardian/2010/dec/07/things-likely-kill-than-shark

Vending machines outnumber pianos, so death by piano has to be less likely that that.

Also, there's less incentive to shake pianos.