Eugenie and Beatrice release photos only. I see no problem with that at all. They aren't working royals, get no funding and a private citizens are entitled to privacy.
The problem for me with what Harry and Meghan did with Archie was that they created more attention whilst saying they wanted privacy. They want to be treated as senior royals whilst refusing to fulfil the expectations that come with public service.
I thought Catherine was really interesting when she spoke about standing on the steps with George on a podcast. They were feeling all the nervousness of new parents but she also understood that the public were full of well wishes and that part of her position was to take 2 minutes to show her baby, the future King, off.
Harry doesn't want to be a senior royal, he gets to keep everything private but he also loses the security and status that goes with the position. He wants to be a senior working royal, funded by the Queen or the Duchy of Cornwall, then the public get to see his baby. It's an unspoken contract that I think he despises and the fact that people can see he despises it is a core part of their PR problems here.