I disagree. The way I suggest above the picture is always only one click away and discussion can happen freely. If you put comments in the photo category no comment would be posted unless Brenna was on approve photo duty which is maybe a couple of times a day during Monday - Friday working hours and then every comment would post together. That is not a discussion… also Brenna won’t do it 
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FYI - My little guide on links. Post links are even easier as there’s a one button copy.