In the rule HTML images contain no text, Failed Example 4 should not be considered a failure according to the understanding of Success Criterion 1.4.5:
Note
The success criterion is intended to address situations where images of text are used rather than text. Where images of text are used in addition to text to convey the same information, and where both are presented to the user, this success criterion is met. This allows authors to convey content using any styling they desire, while also presenting the information in text, which can then be manipulated by users to make it more distinguishable. This is in contrast to 1.4.9 Images of Text (No Exception), which applies to all images of text, regardless of whether or not they are used in addition to text.
In the rule HTML images contain no text, Failed Example 4 should not be considered a failure according to the understanding of Success Criterion 1.4.5: