Uphill holes have the potential to be anything but weak. What's often weak, is the lack of creativity in dealing with the feature, from a design/maintenance perspective.
So many holes that have been built, go from an elevated tee to a valley, with an uphill approach. (Wasn't that Ross' forte'?) With all those predecessors, being creative must be a real challenge.
Modern examples of well done uphillers; SH 18th, BN 6th, Friars Head 6th (7th?) Greywalls 4th. etc.
Poor example. A subtle uphill short four. The owner wanted to toughen it up and make it less reachable. Decided to add what little yardage they could, but, rather than leave the tee at grade, accentuating the uphill nature, He built an elevated tee. The result is so poor, I am reluctant to mention the course.