I flagged this answer with the note "pictures are a little excessive" and the flag was dismissed as invalid. I would like to publicly note that this is a terrible, terrible precedent. The images are completely unnecessary and are taking up far too much space to be helpful. Perhaps one and then a list of text example would work? In any case, I strongly disapprove of this behavior.
Even more, I don't think people should be penalized with an invalid flag for noting something like this. No action being taken is fair, as this is a judgement call, but I don't think bringing such a post to the attention of the moderators is a bad thing. I don't personally care about me getting this particular invalid but I hate the idea that anyone who flags posts like these will stop doing so.
To be fair to the poster, I have waged war on images in other SE sites and lost.