I always found it funny how they'll sometimes try to justify their claims scientifically to give it an air of legitimacy. If god created the stars close to one another and expanded them to fill the sky over a single day, the skies would be dark for billions of years. A YEC could easily say "oh well god put the light there to make the stars look like they've been in the sky for a long time" but very often they just don't have an answer because they didn't think of one. Unfortunately, there's almost that will stop them from doubling down on their beliefs and just becoming more prepared for the next person they talk to