Not sure if you are serious or not, but I agree with that statement. Of course you cannot write completely bug free code, but practicing competitive programming until I could write complex 100 line programs bug free in 10 minutes is probably the most well spent time I've ever done in life.
Being able to write big bug free chunks means that if I think of something I want to do, then write the 500 line implementation without even compiling or running the code it tend to work the first time I run it. Of course that code isn't production ready, but it helps immensely in writing prototypes and mapping out problem spaces. So when another person does their thing and implement 1 solution, I've written 10 different solutions testing a lot of different architectures and picked the best one.
Edit: I think the biggest win from doing this is that although writing code is the easy and effortless part, debugging your code afterwards is extremely mentally draining and takes away mental energy you could be using to think about architecture etc. Think like this, how much high quality thinking have you wasted on debugging your code? Now imagine if you with a little bit of deliberate practice could eliminate most of that waste, wouldn't you do it?
Being able to write big bug free chunks means that if I think of something I want to do, then write the 500 line implementation without even compiling or running the code it tend to work the first time I run it. Of course that code isn't production ready, but it helps immensely in writing prototypes and mapping out problem spaces. So when another person does their thing and implement 1 solution, I've written 10 different solutions testing a lot of different architectures and picked the best one.
Edit: I think the biggest win from doing this is that although writing code is the easy and effortless part, debugging your code afterwards is extremely mentally draining and takes away mental energy you could be using to think about architecture etc. Think like this, how much high quality thinking have you wasted on debugging your code? Now imagine if you with a little bit of deliberate practice could eliminate most of that waste, wouldn't you do it?