question about the pro series stand mixer

hello everyone! i recently got back into baking and started to use my old kitchenaid professional 5 series stand mixer. i received this mixer as a christmas gift in the 10th grade, so it is about 13 years old. although it works just fine (albeit a little louder than i anticipated, can’t remember how loud it was when it was new), i’m thinking about buying a new one as my sister loves the grey colour and i would prefer pink. however, i remember seeing some controversy around kitchenaid mixers somewhat recently- something about the attachment point being made of plastic that can break or wear down easily instead of metal. this was maybe 2 or 3 years ago i saw this. does anyone have info on this they could share? should i just stick with my older machine to avoid newer models potential corner-cutting manufacturing?