You misunderstand the purpose of checksums. Checksums and error correcting codes do no eliminate errors, they reduce the frequency of undetected errors by a kno

You misunderstand the purpose of checksums. Checksums and error correcting codes do no eliminate errors, they reduce the frequency of undetected errors by a known factor. If a system was designed with the usage of TCP checksums in mind, then removing TCP checksums will create a system with an error rate 4 orders of magnitude higher than before.