Zippi, a spoon is fine.
It's the notion of "spooning" that is less fine.
It's about allowing babies to discover textures, tastes, etc for themselves and being amazed by what they're capable of.
And, frankly, if your baby is capable of suggesting it's a nice idea if you spoonfeed them yoghurt at 7mo, so be it. Do it!
DS1 was capable of letting me know he'd rather I held the banana for him to peck bits off at that age, so I did. He's Not Keen on getting his hands messy, even now (although he does dip his fingers in yoghurt... "Yook, Mummy, I got yoghurt on my fingers!").
DS2, on the other hand, was totally against the idea of anyone else having any sort of hand in what he ate, and FAR prefers to feed himself. He will allow DH, DM and MIL to feed him porridge and yoghurt from a spoon, but very rarely me.
Again, so be it.
I refuse to get hung up about it, because there's nothing to be hung up on. However, one thing I do not believe in is distracting children so they'll eat, which is often what is suggested when a baby doesn't take to being spoon-fed (NOT by anyone on this thread, I'm sure).