Because I watched it and it’s very clearly CGI. Paint cans are an order of magnitude stronger than a wooden piano top, not to mention they wouldn’t all explode at the same time. The emoji ball didn’t just land at the edge. No one has a 10mx5m hydraulic press.
Financially stupid? I guess, but that applies to almost all collectibles. So does paying to go out for a meal when it’s cheaper to cook at home, but people still do it because they enjoy it.