The recent supernova, SN2016adj, first appeared in the skies here on Earth on February 8 earlier this month. It is located in the nearby galaxy, Centaurus A which is about 11 million light years away from us. Since we know when the light from this supernova first showed up does this single event set a minimum age of the Universe at at least 11 million years old?
I think it's a good argument, and it does have a chance of changing the mind of a YEC who is open to looking at the data.
I have a missionary friend who was formerly YEC. SN1987a caused him to rethink his position. He could believe that light was created in transit, but he could not believe that God would provide details of a supernova explosion that never happened. He is now an old-earth creationist (OEC).
"Science without religion is lame, religion without science is blind." — Albert Einstein
I am very astonished that the scientific picture of the real world around me is very deficient. It gives us a lot of factual information, puts all of our experience in a magnificently consistent order, but it is ghastly silent about all and sundry that is really near to our heart, that really matters to us. It cannot tell us a word about red and blue, bitter and sweet, physical pain and physical delight; it knows nothing of beautiful and ugly, good or bad, God and eternity. Science sometimes pretends to answer questions in these domains, but the answers are very often so silly that we are not inclined to take them seriously. — Erwin Schroedinger