Yes. Dead cochlea hair cells do not heal however things like acoustic trauma and infections can increase the damage so logically you will keep accumulating injuries that make it worse as you age.
Aging breaks down our bodies and hearing loss becomes much more common and likely as you get older, and that also increases the chances of tinnitus worsening.
@Juliane - you were / are still young, so that helps. Maybe another decade or two would have been worse. Habituation can make it seem the same for some people even if it worsens some over years.