I think you are simply trying to say that one can travel to multiple countries within Schengen area without a visa as long as they have a confirmation (ideally written like email) that they do not need a visa with Canadian RTD. You are saying that one does not need to return to Canada when travelling between multiple countries where the Canadian RTD allows visa free travel. This is true and makes sense. It is still important to hold tickets for onward journeys AND final return ticket to Canada from whatever RTD visa free country you intend to visit last.
Actually not true with an RTD. Germany accepts the RTD but believe France and Italy for example require a visa if have an RTD. Nobody is suggesting you need to return to Canada between travel to separate European countries. Only suggesting that free movement throughout the EU without visas is not possible with an RTD but is possible with a Canadian passport.