I do believe that too that bitcoin network can't be hacked, the fact that it stays as a top and popular digital currency is the proof. And I guess many people must be converting their bitcoin to other altcoins or assets that is more secured. But wallets can be hacked, and thats what happened from the recent hacked sites. I think if there are genius that can hack the system, gonna believe that he is a top hat hacker.
And not all hackers are that bad, there are also white hat hackers.
I disagree in the bolded part, bitcoin can be hacked but it is very hard, in the near future it might get hacked using super computers (we can't stop technology and we all know that) and if that happens, bitcoins will be very easy to hacked, the dev team might need to do some tweaks in the code (lets say security to be more secure)