“As a matter of fact, i think (as a former RC lector) this is another parroted dubious claim.”
The Internet is a wonderful resource. It also provides fallacious information for the malicious to use in spreading error.
So why did you engage in it? Or do you defend your fallacious assertion?
Anyone who believes that the entire Bible is read during the three-year Catholic lectionary reading cycle must be unfamiliar with the contents of the Bible, meaning they have never read or studied it for themselves. If they had read it cover-to-cover, and especially if they made it a habit of studying it daily, they would begin to recognize the huge chunks that are missing from the lectionary readings.
There's an easy way to prove or disprove our assertions. The first way is to obtain a copy of the lectionary reading list, and re-order the readings into book/chapter/verse order rather than reading order. Look and see how many breaks exist in the numbering.
Another method would be to simply bring a Bible into Mass and, using a highlighter, color each verse as it's read during the next three years. At the end of the three-year reading cycle, dsc can then flip through the pages and then witness how many passages aren't highlighted.
It also allows vague, unsourced claims to be made about unnamed people for unspecified reasons.