No. There is no such provision at all.
The allowable list of proofs is at https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/guide-0002-application-canadian-citizenship-under-subsection-5-1-adults-18-years-older.html#language and, to summarize, they are an approved language test, or proof of schooling in English or French, or proof of completion of a government-funded language class.
The alternative to providing one of those proofs is to have "a disorder, disability or condition that is cognitive, psychiatric or psychological," in which case IRCC "will accept supporting evidence from a Canadian medical practitioner. It must explain how the disability or condition affects your ability to listen and speak in English or French." And they "will return your application if you don’t submit this supporting evidence."