...or, have the those who labeled it outdated been vindicated by the low scoring?
It appears that Hoylake is a great test of golf judging by the number of top players on the leaderboard. More importantly, based on the comments of players, it is a great test of the mind. (The firm conditions certainly help in that regard.)
It will be interesting to see if the course and this Open Championship are written off because of the low scoring, or embraced because it has produced such an impressive leaderboard and interesting, thought-provoking play.