We have to be able to add alt text to images in Proton Docs
While working on the accessibility of a document, I was not able to add alt text to images. This is a basic accessibility feature, and is in WCAG 2.2, 1.1.1 Non-text content (https://www.w3.org/TR/WCAG22/#non-text-content). There is no good reason to exclude this feature. It would only lead to less accessibility for people with disabilities.