[sandworm101]

Minimum weights are used in all sorts of racing, from sailing to F1, both as a bulwark against technology costs and cutting corners on strength. Drag isn't much of an issue in cyclocross. It's the sort of thing you can throw money at for marginal advantage, but it doesn't make those who can afford it unassailable.

[JanezStupar]

In cycling frame weight is not a big or factor. Wheel weight on the other hand is very noticeable.

Also note that frame efficiency is more important than its weight. For instance there were silly light, silly expensive bikes around which had crap performance, because they twisted like noodles in the wrong places.

Super light weight is a great magnet for dentists.