How is it a bid’ah? Because the Prophet himself didn’t read the Qur’an in that context himself.
You or I may think there is nothing wrong but who are we to say anything when the Prophet himself or Allah Himself has forbidden bid’ah?
And if there are a TON of things that become forbidden for us to do, then that’s fine. We should go astray from these things because in the end it’s all about heaven vs. hell. Even to be safe, we shouldn’t do things that have doubts about them.