How particular are you about brands?

Hello market research firm. When there was money, I was a little bit more discerning. Now I'll generally go own-brand for cooking ingredients such as sauces and condiments (Asda's own brand bolognese sauce at 70p for instance is every bit as mediocre as Dolmio at twice the price and significantly better than the Grossman slop). Supermarket 'bread' is also equally rubbish no matter what brand you get, with Tesco Farmhouse being the least worst I've found. Likewise for freezer stuff, it's all terrible anyway so might as well get the cheapest possible. A Chicago Town used to beat an own-brand but the quality slips ever further and it's all just cardboard now. There are a few products I'll never go own-brand for. Mayo must be Hellman's, ketchup and baked beans must be Heinz, butter must be Lurpak (inb4 ree lurpak sucks actually). Cereal must be Kelloggs. Those are the threshold at which I feel I'll have failed at life. I've noticed that the gap has closed between supposedly premium products and budget ones. For instance, I eat a lot of peanuts and used to exclusively buy KP as they were biggier and juicier than own brand ones. Not the case any more. Some products have gone from excellent to awful due to formulation changes, namely Dairy Milk, Yorkie, Wagon Wheel and other chocolatey things. I wonder how far food can shrinkflate and enshittify before the industry is forced to increase quality again. The last few years have felt like a race to the bottom in that regard.