It can happen to even the top of the line model. But, you can only keep so much on a Mac before you start to see deterioration in performance. Overload it with too much stuff, and it won’t deliver as it should. When things get overloaded with junk, they don’t work like they are supposed to. When scissors get sticky, they don’t cut.
When your car’s engine collects buildup, it doesn’t pick up like it used to.
