Try out ncvp theme
Even after inhibiting the loading of a lot of block stuff on each page, site looks quite good. In particular, Home page works, although the styling of the list of posts may be a bit lacking.
Tag: images
Move away from block editor
Now it's clear that I don't need full site editing and only need the block editor for the Home and Blog pages, convert all other pages and posts to the classic editor.
Category vs Tag
Each post has only one Category. It can have various tags
Raw embedded images post
These images are all stored in single image galleries. The first image pops out with Fancybox effect. The other two don't. There's limited controll of the size of images, and there doesn't seem. Not ideal. The mobile display is good. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc vel massa tincidunt, aliquam elit id, […]
Post with an image
If you don't want the image to pop out with a Fancybox effect use a gallery shortcode with link="none". To get a pop out link="file" The advantage of using single image galleries in this way is that the code is very simple and there are no urls to interfere with copying.
Force strong passwords
I'm surprised this isn't part of WP core. There are a few plugins which address the problem, at least one of which admits to being susceptible to being bypassed by a knowledgeable hacker. It ought to be possible to see how strong a user's password is from the dashboard.
Second level page
The root is level 0. We never see it. The pages in the top menu are level 1. This menu is effectively static. The menu item for this level two page appears at the extreme left of the side menu.