For me, once sure that the wine is free of CO2 (also vacuum degas, so accomplish that very early on), free of sediment, oaked properly, and needs no further adjustments, bottling is acceptable, especially if carboy space is needed.
The things read here and learned from experience, is that when a wine is young, I'm only confident that I have it degassed. It changes with time, drops more sediment, the fruit changes, the oak falls back, tannins mellow, and as those evolutions occur, if it's already bottled, you got what you got.
Have put wines from carboys back into the barrels that at the time thought were sufficiently oaked when removed. Have wines that were rushed to bottle under 6 months that have a beautiful dusting of sediment in the bottle a year later. Even in my 55F cellar, get diamonds in my carboys and barrels before bottling. Time is smart and tells the tale accurately.
Point is, and this is only my conjecture, that starting at about a year of age, my level of confidence in what is seen, smelled, and tasted in the carboy is representative of what can be expected to progress properly into the future bottle aging of the wine. That's my typical minimum goal. Do I violate it? Yes, sometimes, and sometimes suffer for it. Sometimes go much longer, never been sorry for that.
Have read that wine ages more slowly in larger quantities than in smaller, and also that there is an increased risk of oxidation in carboys (due to inherently leaky bungs) than behind a cork in bottles. Don't know how to balance that scientifically, but haven't had any oxidation issues in carboys. In the end, as others have posted, you get to decide what you want to accept, what works for you, your situation and resources.