I think that anonymity of a bitcoin owner and guessing or calculating a bitcoin address are different things.
No matter what bitcoin address, I'm far from the idea that a self-respecting hacker will pick up the code to get the hash sum. If I wanted to calculate the owner of a bitcoin, I would have done it through calculating the client's IP. If I knew one or the required set of bitcoin owner IP addresses, I would attack the owner with special software, I don't want to advertise bad things, so I don't name which one.
Hi.
Such turnkey software has already appeared a lot, starting from buying components just in the network and ending with the purchase of ready-made complex solutions, which can use even a child. Probably after 24 hours, I would see which keys of the keyboard (both physical and screen) my attacker presses, and even where he drives the mouse on the screen. I think, but I don't know, the whole financial part of the attack would take me $1,500. If the attacker has a financial interest for the hacker, then it is a matter of technique and ingenuity, not quantum computers and code brute force attack.
Hackers are a thinking people, unlike many network users. If only there was a point...