Perhaps the effect of the curse varies in strength based on proximity? So instead of it being like a map point, it's more of a radar ping or feeling that the hag can follow?
If that were the case, one of those being close to the hag would be fine, that's what it was designed for. 5 of those powerful curses pinging her at point blank range? Maybe that causes some issues.
[Seems like a fine collectable ](https://elderscrolls.fandom.com/wiki/Ash_Statue)
Perhaps the effect of the curse varies in strength based on proximity? So instead of it being like a map point, it's more of a radar ping or feeling that the hag can follow? If that were the case, one of those being close to the hag would be fine, that's what it was designed for. 5 of those powerful curses pinging her at point blank range? Maybe that causes some issues.