You're not totally wrong about them beeing useless but there are a few things that might make them seem even more so.
1. they are useless if you're solo (except for fear which might be able to get the mob far away before the link breaks)
2. they need to establish a link - but with low level the chance of establishing one is not very high
3. if the link is established you can not do any other actions (move, cast a second spell, use a melee attack) or it will break
Especially the 3rd point is what makes these spells so hard to use.
1. they are useless if you're solo (except for fear which might be able to get the mob far away before the link breaks)
2. they need to establish a link - but with low level the chance of establishing one is not very high
3. if the link is established you can not do any other actions (move, cast a second spell, use a melee attack) or it will break
Especially the 3rd point is what makes these spells so hard to use.
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