I have no problem with this. The point of this project and website is to share information and have people to build drop controllers.
There should not be any issues porting the code to the ESP32 and I would be very interested in your results, especially your findings with how accurate the ESP32 is for real time events.
Some time ago I did experiments with accuracy and finer times. I tried faster MCUs and found that the processor did not really matter. The slowest part was and always will be the solenoid.