Many thanks to @Boatboy24 for reminding me I had one of these laying around in the Cellar! Definitely a 5 Star QPR wine for sure. Drinks well above its price point.
I have had many expensive bottles of wine from warm growing regions (CA & WA) with pH in the 3.8+ region that were still amazing after even 8 years. Those bottles were stored at 58F average temp for their entire life with me. So more important IMHO is not the pH but the storage temp you keep...
I always have 3 cans of Guinness in my beer fridge at all times. They are the leftover cans from the 6 pack I bought last March to make Corned Beef.......
KMETA is pretty good at removing wine stains but oxyclean will wipe them out almost instantly. If you go that route I would rinse off with some clean water after the stain has been neutralized.