Fixed

It's to hot, and they can't even spell

Yes, string addition is slower than joining a list. But it's only significant if you are adding a lot of strings together.
Here's a nice article about this problem when the number of strings to be added are small The Sad Tragedy of Micro-Optimization Theater

When adding 2 or 3 strings together, it has no performance overhead whatsover compared to making a list and joining it.
And since this method is much more clear and pythonic, it is best practice.