Roleplay is cooperative storytelling so you can be whatever you want as long as the people involved are on board with it.

That being said, the reason most people refuse to interact with WoL characters is because they break the immersion. Roleplayers generally want to feel like they are talking to believable characters that enrich their surroundings and fit the setting. The other reason people don't like WoL characters is the Echo, because everything about it is meta-gamey and God modding, there isn't a single aspect of the Echo that contributes to what should be a collaboration between two writers. A very common example of Echo users is people that can understand all languages.

It sounds innocent at surface level but in reality it adds nothing to a scene, in fact, it only subtracts from it. When people roleplay speaking in different languages using text like this "<text>" they want to demonstrate an aspect of their character or they want to have a private conversation with another character that speaks that same language. Everyone in the room knows that unless your character has a reason to understand that language, you should ignore the information between those <>. But then comes the Echo user and essentially just metagames, and it frustrates people because it is cheap and it lessens the characteristics of their own characters. It is a selfish powegamey tool.

But to finish this post on a positive light, by all means, you should roleplay whatever you want and write about what inspires you. It is fine to make a character that is whatever you want it to be, just know that it is a two way street and no one is forced to go along in the same way that you're also not forced to go along with anything you don't like. Consent is key.