You’ll probably find that these kind of systems don’t have just a single ‘New Bot Account’ detector, but a tangle of multiple subsystems that automatically temp

You’ll probably find that these kind of systems don’t have just a single ‘New Bot Account’ detector, but a tangle of multiple subsystems that automatically temp-lock accounts based on various heuristics written by different people at different times. A new account might incorrectly trigger an account lock due to signals for proxy detection, another lock for a specific 2017 bot wave with Romanian IP addresses and a third generic fake account lock. That, in turn, triggers a recidivism threshold that sets off a permanent disable. Working ‘at scale’ means that developers who unravel old code to fix a use-blocking problem for 5000 users can be considered astronomically less productive than someone who fixes a minor problem for 100,000+.