Would you bet your entire bank account right now that every one of the GaG persons you follow or interact with on GaG are telling the 100% truth about their identity in their profiles, the names they state are their own, and/or using a real picture of themselves?
The reality is that everyone on GaG is anonymous unless you know them personally in the real world because whatever is posted on here and other social media sites is 100% what they post, what they tell you is true, what they write down, the age they tell you they are, and the pictures they've chosen. This whole idea that seeing a picture or a name on GaG means that that person isn't afraid to post or isn't afraid of their identity is based on what...the miraculously honest truth telling of the internet? Really?
This is part of the allure for a lot of people on social media sites. This idea that they can create this identity for themselves and be whomever they want AND say whatever they want without repercussions. Granted, there are of course many a truth teller who are absolutely honest about who they are, but the reality is, you on GaG will never know that for sure no matter how many times they state it to be true and honest information about themselves because odds are you have no way of knowing unless you meet them because even a catfisher can send you 10 photos of someone else that's not them as proof "they are who they say they are."
I think to some degree it makes a user feel like they are talking to a real person if they see a picture and some name up or that perhaps this person won't be a troll, but for the reason above, that the internet, picture or not, basically means anonymity for all, that doesn't stop trolls because trolls like probably half of those using social media, are lying in some part about who they are so picture or not, you're basically getting mad at someone who doesn't even exist, at least not the way they present themselves as existing.
I personally don't think it matters whether someone goes Anon or not and that too many users put too much stock and faith in the fact that they can see a users photo, but yet probably wouldn't bet their entire bank account that it was real because it is the internet which means you can't really be too sure. I like to believe in the idea that we can be this amazing community of people whom we can connect with online, and to some degree, that absolutely happens, but I don't really know who you are outside of what you present, so it's either blind faith or accepting that I know "a version" of the real you that probably isn't completely accurate.