The issue in that statement is that "correct design" is a matter of interpretation, top tier players will sneer at them, that is already happening with the AX pre-built, and average players may not need that build.
The onus is on the purchaser to decide if the build is "correct enough" to buy.
I'm sorry, I don't agree with you.
For example, I saw a video yesterday of a man testing a similar build and 5 acid catapults were enough to fly to Titan (1 left).
Another person had 2 left. Given that the rebuy is 0 I don't consider it a special mistake, maybe it's a one way ticket ?
Then eventually you could add more charges there or put one next to it in place of the AХ scanner.
But if, for example, the ring scanner affects the amount of mining and it is not in the assembly, this is just a special error and I would not like to see such a thing.