There were no other options because Hardwick didn't bother to get one in his first year
Bit harsh and off the mark.
When Hardwick joined for 2010, Cameron and Campbell had made the list decisions (since Hardwick knew none of the players) for the trade and draft periods and decided to keep Simmonds and delist Pattison. IIRC Hardwick said at the time he differed from those decisions on one player. Whether that was Simmonds/Pattison we don't know but Simmonds was prepared to retire at the end of 2009 and was convinced to sign on for another year.
In 2010, Hardwick obviously asked for a mature ruckman (given Simmonds retirement early in the season) and Jackson drafted Derrickx, a 23yo ruck from WAFL club Claremont when Giles was really the only other option. In team selections it should be noted that they used Post late in the seaason as the second ruck which demonstrates the lack of options the match committee saw in front of them.
Again in 2011, Hardwick has asked for a mature ruck and they have traded for Maric.
Don't think you can tag Hardwick with the ruck problem but nice angling.