I was editing the wrong header.tpl file. The one I needed to be editing was within the node_modules path and in the specific theme. It works as you said @pichalite
When we used to use IPB, we had a handy feature where general public members could enter a forum and only see the topics they have created themselves (used to be handy with ban appeals and reporting people without judgement)
Is there a way we can do this with NodeBB?
Not at the moment without a custom plugin.