Summer tire indiscriminate

Hey, I wanted to change my tyres next week and therefore I looked at my summer tyres. As you (hopefully) can see in the pictures there are some cracks to see. I asked my father, of course, but who only said that this was not so bad and I should not have ”so”. I’m not so sure about that. I had already seen a few smaller cracks in the summer, but they didn’t feel so bad. But now it’s more hee cracks and I’m not sure if that’s still Aicher driving the tires anymore (made in 2011). Maybe you can help me if it’s time to get new tires.