Marko Saric wrote down a few reasons, why you should remove Disqus from your website:
- Embedding Disqus makes your site slow
- Disqus tracks your visitors and shows ads
- Disqus inserts its own affiliate links in comments and content (for example when you mention Amazon, it inserts an affiliate link to Amazon, to get a referral fee with every purchase)
It’s not possible to entirely disable advertising without paying for the premium plan of $10/month, but there are some settings that can make things a bit better.
There's a privacy friendly alternative called Commento, if you really need comments.
I removed Disqus long time ago, first replaced it with a GitHub-based solution, but in the end decided to completely remove comments. Comments are a spam-destination and I don't want to waste time moderating that. People can either send a webmention to my posts or send me an email.