Remove or provide ability to change alt text on launcher logo for accessibility reasons

One of our customer's has flagged that on the messaging launcher the icon (that appears on the top left) has alt text associated with it ('company logo').

When using a screen reader on their website, with the launcher loaded, the screen reader will read out 'company logo' when it hits this element, which is less than ideal. 

The suggestion here is that this alt text should (a) ideally, be removed altogether (b) or should be able to changed on the back-end to better reflect the brand.