This was an interesting argumentation in respect to the security of blockchain based applications or lack thereof for centralized applications.
For a long time I've tried to create websites with php / sql and I was so scared of sql injection that I finally stopped doing it. Being able to program stuff and to have all the data on a secure blockchain seems a so much better solution....
Oh, yes... I totally understand your fear about that... SQL injections are a very nasty thing and I had a couple of encounters with that problem in my hosting business...
Blockchain brings a lot on table regarding security, and it has been used more and more for different projects where security is the main factor...
Thanks for the comment! Have a great weekend!