Hi @ArchAngel,
Welcome to HepBcommunity!
Regarding your question, there is still a risk of developing liver fibrosis and cirrhosis, but this is much lower than if you were untreated. The majority of people who are treated with tenofovir and have some fibrosis/cirrhosis find that their liver does not get worse (~50%) or even gets better (~45%) after 5 years of tenofovir treatment. Only a very small number (1-5%) get slightly worse.
Source: https://www.sciencedirect.com/science/article/pii/S0140673612614251?via%3Dihub
Hope this helps!
Thanks,
Thomas