That's not how it works. Llama and Llama 2's raw model is not "censored". Their fine tunes often are, either explicitly, like Facebook's own chat fine tune of llama 2, or inadvertently, because they trained with data derived from chatGPT, and chatGPT is "censored".

When models are "uncensored", people are just tweaking the data used for fine tuning and training the raw models on it again.