I didn't say it means much, but it is one less talented competitor for him to share with. Ingram played every game last season, so it stands to reason that if Ivory wasn't there, Ingram would have had a few more carries, unless you think they would have given the same amount to the 5th string RB in those games.
Thomas and Ivory were both UDFAs so I wouldn't put it past the Saints to give carries to the next man up, if Ivory wasn't available. Travis Cadet is more of a replacement for Sproles than one who would take carries away from Ingram, so maybe Khiry Robinson a 220 pound rookie out of West Texas A&M becomes their new Ivory.
Their draft status (or lack thereof, as it were) is as unrelated to the carry distribution as anyone can get.
If your argument is that Ivory's carries are going to go to someone other than Ingram because Ingram needs some breather time during the games, that's a fair point. But wouldn't Pierre be the beneficiary in that scenario?
But any implication that the Saints, by design, try to siphon off carries to guys lower on the totem pole based on some principal or plan to get those guys some action is misguided.
What playing PT and Ivory tells you is that the Saints will play the guy who proves himself regardless of where he was drafted. The thing is, they seem to keep sticking with Ingram despite those of us in the fantasy world constantly gnashing our teeth. I think that means they see something there. And this may the year that it comes together for him.