Most of officials in every democracy, purported or otherwise, are unelected. For practical reasons, you always elect a group, which then sets up or elects other groups, which together form the government.
And your point is? Generally only unelected officials are allowed to formulate or propose EU policy (the EU "parliament" is only there for rubber stamping it) how is that similar to most countries?
We don’t expect our politicians to dedicate their lives to scientific research so this perspective is inherently flawed.