You have WAY too many features for an initial product idea. It's not focused.

Try to describe the value and differentiation of your service in 1 sentence.

Don't add game mechanics, upvoting and the kitchen sink unless it is part of the core value/differentiation.

The competitive advantage matrix you have at the end shows how unfocused you are: your competitor have few features, and you have checkboxes against ALL features.

More features isn't good.

More features is bad. It's less focused. You'll do them worse.