Every single entry level carbon fork?
I did say likely to be. There is probably exceptions. But you will never know.
You will never find out how your carbon fork was laid up, and you very rarely have the opportunity to compare it to an aluminium fork of identical geometrical design. Thus saying all carbon forks are better and smoother than all aluminium forks is inaccurate.
At the higher end market, I'd have more trust in a manufacturers claims, but at the entry level prices? I believe it is mainly just marketing hype, and at a price where there are compromises, I'd look further than the forks, and not discount something just because it didn't have them.
Without side by side comparisons of identical forks, with just the material difference, it is impossible to say that the carbon will always be a smoother ride.
My comment was that, although carbon forks CAN be smoother, it may not necessarily be true, especially at that price, so don't discount something because of it.