You can build a rendez vous point that only 2 parties know about => send messages without anyone knowing and leaking metadata . Then address book. Then we win
Let’s not forget there are many other concerns to have with hardware such as : -is the entropy of the chip good enough or is it in reality shooting at a subset ? Brute searching that region could be an attack plan
Easy answer: Bitcoin can’t be bad because it’s only a protocol.
Now it’s only as good as the people using it. If in a distant future good times have created weak men then it might happen that they change consensus rules or emission schedule
Further more let’s consider what bitcoin doesn’t do and that we need really bad: -how to collectively build stuff like roads schools hospitals orphanage etc - how to welcome newborns in this world (bag of coins?)