People need essentials, the reason things are so delayed is people like you trying to order a recorder when people need toilet paper and groceries
Rather than blaming people for using amazon for precisely its intended usecase, ,despite individuals having next to zero information on what was actually up with amazon's backend causing the slowdown (are there simply no essentials left to deliver, and the backlog is due to other issues..? I dunno, I'm not amazon, and probably you aren't either.)
Hell, it might already be the case.. which would mean you're attacking people for buying normal goods for no particular reason.
This is exactly what Amazon is doing, as mentioned in the linked article. Hence why the gp's musical instrument is taking a month to arrive.
So the answer is then.. attacking for no particular reason