I'll agree with the ages and cycles of time. If we hit the golden age even by 2030 it's not a magic button. There is a transition period to get there, just as there was a transition to leave it. That means we here, at Mycotopia, are making a difference. We are a part of that enlightened mindset and the exploring that's necessary to achieve it. We are a part of a revolution in thinking, and many of us will be around to see it's effects.
To that point, even after it's attained, there will be lingering effects from old that stick around for some time. Many of us will not be here to see the end of that, but our children, and our children's children will be. Hopefully they know and appreciate the struggles we went through to bring them that. Truth is, even that will fade as time progresses, and much like our past the beginnings of that era will be lost to the folds of time.
In scales such as these, a human lifespan can only have so much impact, and so much observance, and so Alders comments I also agree with. Essentially, be the change you want to see in the world. Manifest your own reality and help as much as possible the prospering of others that are with you on this journey, and those just starting their journey.
The age of truth is simply, imho, a fundamental understanding of the way of things which allows one to flow more effortlessly through time. Using that truth for good or evil is individual, but I would like to think more good these days than bad. When you look at the bad, as OP put it, it's a reflection of the good in the world. A reflection that, via technology and those that care, is shining a light on all the evil being done. It's showing people for what they really are, and for better or worse, it's paving the way for change.