If you google the headline, you get another article of the same newspaper, posted on the same day and hour, about the same subject, giving you another intro, that his current weight is ideal for the two flat TT's in the first week.
So let's hope they are just blowing smoke and aren't that dumb to actually forfait gains in the third week in order to gain 20 seconds in the first. For a GC rider his size, 63 is a lot with high mountains coming up. I don't assume they hope to lose 2kg between day 9 and 13