These tokenized ticketing platforms underpinned by blockchain would ensure anonymity, privacy and security. For instance, could protest movements be organised to evade oppression?
You have an interesting perspective. I suppose, that it is possible in the case of protest movements. And it would be quite useful for such movements for instance in Ukraine during Euromaidan 2013/2014. But current state of blockchain development force to implement additional infrastructure for its efficient usage such as user interface, because it is difficult for common users to interact with blockchain and add to that need to learn certain rules of community... So this supporting infrastructure could be centralized link. However nowadays a lot of projects are focused to overcome this. In general my answer - yes, it could be so.
If it isn't possible to delete any information from a chain it gives possibility for security services to find every member of the chain. Even if not possible to read the encrypted message it is possible to find a person who added one. After this the standard methods of receiving information works.
Yes, you are right. But finding address in blockchain doesn't necessary mean finding a person.
Additionally one can use one-time address to send messages. It is not an issue thanks to key derivation procedures (aka deterministic wallets). Also the receivers could be protected by "stealth" wallets techniques. There are known a number of those, and some of them were implemented within existing blockchains such as Bitcoin and Monero, for instance.
I'm not sure, that usage of blockchain would be optimal solution for every event ticketing though, but for some - I believe so.
You are right. But also I have also other examples.
Some time ago I read a message of a security investigator. He searched a person who used corporation sources for mining coins. The investigator followed up the chain till transfer out money to the bank account. After it, they arrested the man.
In my opinion, the most vulnerable point is a connection between a virtual and a real.
As I understood a question, the issue more concerns information deliverance. That's why I don't see the reason for participants to interact with banks (if they don't get greedy and try to earn money from this ticketing of cause). Maybe I'm wrong in question understanding. But in the particular case, that goes with the question, the anonymity has the most value. In other cases it might be not so crucial and it would be okay to interact with banks after some event successful completion.
In my opinion, the hype around cryptocurrencies, its usage by crime elements or blindly fascinated people around it causing underestimation and negative emotional coloring of blockchain technology perception. A lot of pure informational projects could be implemented via it, those could substitute existing ones or they could be pioneering. and if the cause of Trevor Clohessy to research one of these fields I don't see neither any reasons not to do this nor problems, those could arise during implementation. So I wish him luck.