Support

As to whether it makes sense: I would say no, it does not. I would just write .htaccess RewriteRules to return a 403 when these spammy URLs are being accessed. There is no point wasting resources to handle what's a simple probe for forgotten stuff on your site.

The reason we treat the WP URLs differently is that, if you've noticed, they're all URLs which can take parameters that perform actions in WordPress. There's more than a decent chance that someone accessing those WP URLs is not just probing for something forgotten on your site, but actively trying to attack it. Therefore, it makes sense to spend some resources to block them entirely, confusing them in the process as to what kind of site they were trying to attack.

As to whether there's any SEO benefit from blocking spammy URLs: none, whatsoever. These are 404s anyway. They don't participate in search engine results.

Now, about importing.

There is no easy way to import hundreds of URLs into 404Shield. Its configuration is part of the WAF configuration which is a JSON document stored in the #__admintools_storage table under the key cparms. Depending on the MySQL / MariaDB version you have you could create an UPDATE query targeting the $.404shield array in the JSON document.

Likewise, there is no easy way to import anything to the .htaccess Maker for the same reason.

You can, however, export all your Admin Tools settings to a JSON file and edit that file. Remove all the keys you don't want to be modified. Update the keys you do want to modify. Now import the resulting file into another Admin Tools installation and these keys from the file are immediately replaced by the contents of the file. Therefore, you get what you asked for, just a bit indirectly. This is what I am doing when updating dev sites across a fairly large number of environments (there are a lot of physical machines, live hosts, and containerised installations I use for development, validation, and debugging). We even expose those things in the CLI to make automated deployments, e.g. using Ansible, Chef, Puppet, etc possible.

You're welcome!