You obviously didn't google the word "stunting" as was suggested. No, they don't "keep growing until they're squashed within the four walls of the tank". They die.
As to "you loaded me up with information about the tank and what I'm doing wrong that didn't help me in the slightest", you're right. It didn't help you, because you choose not to pay attention to it. And it certainly won't help the fish that you are mistreating and abusing.
The mere fact that you chose to purchase these particular fish, which you readily admitted you knew nothing about, gave the very strong impression that you had little or no experience with fishkeeping. Let me rephrase that... Little or no experience with successful fishkeeping.
Honestly, the way in which you responded to being given proper information that disagrees with what you want to believe makes one think they are speaking to (writing to, conversing with...) a child.
By the way, they may be OK now, but the ammonia levels haven't had time to build that high yet either.