Inquiry about modifying image links when changing the company name

I found in another post that "if the company name is changed, all image links will be broken, and the images must be deleted and re-uploaded."

I am submitting this inquiry to confirm this information.

1. After changing the company name, will all previously uploaded image files become unusable?
2. There are a large number of image files— is there an efficient way to re-upload them?
3. Is there a way to modify the links without re-uploading the existing images?

Additionally, please inform me about any potential issues that may arise when changing the company name.