Hello @rebolegi and sorry for the late reply. I'm glad to hear my posts are helpful to you, that means I've done my job in a decent way.

To answer your question, let me quote what I've written in my post.

If you're posting in a community, that will be automated.

This means the community tag will be added automatically and you don't have to.

If for example, I post an article with many good photos about my travel in the "Pinmapple" community, I would use "Photography Lovers" as my first tag instead of "Pinmapple". I don't see why I should use "Pinmapple" as my first tag or as a tag in my post anymore since I'm already posting in the "Pinmapple" community.

Let's see if I understand what you mean. So, if you're posting in Pinmapple, the dapp is going to add the community tag automatically, which is "hive-163772" and that's your first tag. So even if you manually add Photography lovers in the box, that will not be your first tag as the dapp is adding hive-163772. So I doubt your post will appear in Photography Lovers. The community tag is hive-194913 anyway, not Photography Lovers.

And here I need to specify a couple of things. There's a user, who's adding around 30 community tags in the body of his post, like this

hive-194913, hive-120078

This is not only abuse but useless as well as the post will only appear in the first community, based on the tag given by the dapp or frontend.

There are a few exceptions to this. A few of which are "leofinance", "leo" and "needlework". Maybe there are more community tags like this but I can't recall them. If you use these tags, your post will appear in those communities. Check the community rules, some are indicating what tags to use.

Back to the "Photography Lovers" case, I usually use "photography" as tag and then I know whoever is searching for photography, can bump into my post.

I hope it helps.