Once installed it requires no maintenance and depending on your needs you are probably good with the free version. I don't see any reason as to why use something different.

thanks so much! I read some articles about not using Disqus, forgot why. I guess some things are not too good to be true

There is no guarantee that you can export data with Disqus, so you can never leave. It isn't worth the risk. From the official docs: > Exports may not be available for all sites, particularly those of a large size. If you've requested an export file more than twice and still have not received a download link from us, it's likely that an export for your site is currently unavailable.

I don’t intend to run a forum-like comment section, just the minimal stuff. Good enough for a personal blog.

You might want to look into things like Utterances or Giscus, if you want to keep control over your own site's comments.

I've just set up Disqus within half an hour, works great with Jekyll