First of all, the answer is no. The only power banks that can damage an iPhone's battery are shoddy counterfeits.
First, no manufacturer will sell a battery bank that damages the iPhone, because no one wants to lose a large number of iPhone users.
Second, even if you want to damage the iPhone, it is unlikely, because the charging is decided by the iPhone, the iPhone built-in chip will control the current, and the charging bank has no control.
Third, how many people with iphones buy Xiaomi charging treasure, most people will choose Rome Shi and the like.