Nahh, people still get away with stolen funds using bitcoins.It's still possible to hide your trace of your coins using privacy tools like coinjoin or mixers. The idea is that people of high status like Trump, usually have a lot of eyes on them, not that their name was written in their wallet address to specify they own it, but literally they made certain announcements when they had bought their coins, making it's not private but a public agenda.
Criminals won't be so stupid to do such, they are very much aware of the implications that follows so, they would literally use those privacy tools to hide tracks.. fact is, they give good mixing services bad reputations like we have seen alot on the forum, not that they get caught..
I wanna actually the same thing on which you might be able to trace up those Bitcoins seeing on chain but just like been said that they can always make use of those mixing services out there on which they would be able to hide their tracks. Same goes when they do tend to convert it out with neither XMR or ZCASH on which we know that these coins are totally anonymous and once they have done that then there's no way on tracking it out and thats why its not still that giving out that kind of exemption that Bitcoin wont be considered as a tool.
It is that still mainly being used in todays scam and hacking on which it would be that involving Bitcoin to be some sort of ransom and its not that new anymore. For now the best thing to be done is on how you would be able to protect yourself with those scammers and hackers if you dont want to get victimized. So it will be that up to you on how to make out those security measures for you to make yourself that at least safe.