e.g.

I don't see anything especially wrong with 'e.g.' in academic contexts, provided you use it correctly.

'e.g.' stands for exempli gratia. It is used to provide examples which clarify your point, without listing every single example there is.

"Kelly likes sweet breakfast cereals (e.g. Coco Puffs, Marshmallow Blasters and Froot Loops)."

'i.e.' stands for id est. It is used to clarify the one and only point that you are making; it implies that there are no other possible examples.

"Kelly only buys cereal at her favourite store (i.e. the Allmart on the corner across from her house)."

Use them correctly and there's no problem!

Thank you for your reply Collane.

Actually,  I didn't want to ask you a question but to tell you that Grammarly doesn't consider my "e.g."s correct, even though I selected "Academic" and not "Casual".

Thank you for your time.

Uwe