Normal for Apple to be honest
There have been loads of things like this over the years.
Just look at the 360 scroll ball on the mouse they made around 2007. Constantly gunked up, and their advice was to vigorously rub on a moist micro-fibre cloth. Couldn't get the ball out to actually clean the mechanism, so it didn't really fix it at all. I had to get mine replaced twice.
Then you've got the trackpad in my MacBook Pro 2015 - the 2 buttons that you can press down to click on it get clogged by dust etc... With the "fix" being running a piece of paper through the gap to try and dislodge - doesn't really work.
Or more obvious design flaws - the under-mouse charging port on their current mouse.
There are plenty more examples. They just seem to not think things through! But, and this is an important but, they aren't alone in this.
Biting the hand that feeds IT
