And we already have bots that creates accounts 
Scrapers are a different thing, because those steal content. Spam bots that are an issue on public instances are a totally similar issue for private forums. That’s why we have AI scanning content.
For me, geo blocking cuts away a decent amount of unwanted calls and logins. I can use it because I have an all-Finnish forum [1] but a global one can’t use it, of course.
Every knocker increases the load for the web server, but Discourse is different than the PHP-world. A bot can easily do a DDoS type effect to WordPress, and then geo blocking might be one part of the defense strategy. But Discourse is much more immune to that, I guess.
But against spam bots, geo blocking doesn’t help if all countries must be allowed.
translator may change that situation, if it is production ready someday ↩︎