ENS domain privacy?

What are the best practices before registering a ens domain and using it as your social profile.

For example, I see a lot of twitter users having their eth addresses as their usernames.

If connected to a wallet you've been using for years, doesn't that expose your entire investment history unnecessarily to the public?

Pretty new to all this and wondering if it's best practice to always use a new wallet to register/control an ens domain if you're going to use it publicly?

Thanks.