That is fair. Though the reverse effect cursed item property can lead to a lot of stupidity with wands. Though most of it comes into the realm of theoretical optimization since we don’t have concrete rules for what most of them would do.
A friend of mine also used cursed item crafting rules to make a bunch of ammo with the curse effect to Polymorph you with a instantaneous duration and essentially rouletted roll his body until he got something interesting. The guy made a spreadsheet of every published monster and used that to math out how long it would take statistically to roll a dragon. I’m sure there’s more nonsense with cursed item rules that can make them unintentionally awesome but the -2 sword is still my favorite just because optimizing away the -2 penalty just makes it an awesome sword and probably best candidate for a item familiar.