Theory on enchanting

so theres this person in sameria that talks about how enchanting is random
so it gives different effects every time
except, they say thats only for the low-skill enchanters
so does it mean that higher skilled enchanters will be able to choose the type of enchant?
would this also apply for exotic enchantments?

chat is this proof that enzior sucks at his job

My theory is that eventuayl, when our “default enchants” will be tier 2.
There will be an echanter that applies speicfic t1 enchant for a price