1) FB doesn't listen to you.
2) Why are people getting so upset for seeing relevant ads? Ads is what pays for many of the services we use for free, would you rather see obnoxious irrelevant ads?
If you bring this up with someone who works in adtech, the stock response is that we need even more tracking to fix it. It's like the adtech version of "no true Scotsman".
Edit: That's not to mention what a huge waste of money this must be for the client buying this ad space. After ordering something from an Adafruit-like electronics shop, I saw ads for them around the web for quite a while. Often trying to sell me the very thing I had just ordered.
How did I find them in the first place? Second or third page on Google search.