It's about their current chief which recently voiced thoughts of retiring from politics by the time he turns 80 (this would be in 2 years).
But the guy isn't like new to politics - he was a right-winger in the CDU for many, many decades and he also managed to achieve offices in that time.
So, when the AfD arose with him at its peak, it was rather like a second career path that he did. And he started this being already over 70 years old.