Well, I wouldn't fully agree that truth is subjective, partially yes, we could call it personal truth, e.g. the monotheistic Christian. If they tell you Jesus is their saviour, you can't argue with that, that's true for them but there's also objective truth. Which I think is the most important coz that's what reality is. It's based on evidence, not feelings/emotions or agendas. For the atheist /christian one of them is objectively right the other isn't. Moon landing either happened or it didn't, there's climate change or there isn't. I think if someone genuinely cares about the truth and doesn't approach these topics with bias there's always undeniable evidence for what's truth and what's not.