Bored.
Nobody goes south, ever, and no money goes east/west (buying chips off another player) irrespective of where the cash goes.
Full stop.
Whenever I see a post at the top of a forum from a long time ago, I always scout to see who brought it back from the dead.
In this case, IT'S YOU!!!!!! #HiNeighbor
Now since this has been brought back from the dead...
The one-offs probably don't hurt the game a ton, but if you take ratholing to it's logical extension where anyone can remove any amount from the table (even if restricted to keeping some minimum) it will shorten the length of play as players engaging in this behavior are probably reluctant to put cash back in play if they get low. That's bad for home games (and also bad for cardroom rake, but we don't care as much about that I suppose.)
I was in a game where we (accidentally) experimented with this once and I don't mind telling you it was an unmitigated disaster.
(Background on the game, was probably 20 years ago, a friend from work and a bunch of his friends, I'd probably played a couple times a month for about 6 months at this point, game was 25¢ ante, NLHE usually 6-7 handed, and we actually played with the cash, quarters and all.)
Someone wanted to take some money off the table (and we literally were playing with cash mind you) and the host granted it without an issue. Then after the next pot it happened again. Pretty soon, we were going to have to poll every player before every deal about "how much is in play." It became a logistic nightmare.
(And again, i was a semi-regular and this was generally a good game, so I didn't feel a need to rage-quit over this. Maybe it was just curiosity as much as anything, so I went with the flow at first.)
After a few hands of this, I pretty much drew the line on how ridiculous this was and wanted to come up with another answer. We did settle on a raise limit in lieu of allowing money to be taken from the table. This would be the same as what we would call a "spread-limit" game today instead of "no-limit." (We set it at $15, IIRC.)
Bottom line, even if the anti-cheating provision is no longer relevant, there are good logistical reasons to disallow rat-holing. Mainly if you have say 2000BB on the table and a couple players that win big pots start staking 200BB off the table with no intention of coming back into play, the game will get smaller, quicker, and break sooner.
And from the side of the actor, ratholing is just bad poker in most NLHE cases, unless you are playing scared money. But if you have an advantage, you reap the full benefit of that advantage when you have enough chips to cover everyone.