That's probably what Disqus would have said too if you asked them when they were in your phase. Privacy concerns aren't solved by promises, it's solved by infrastructural and technical decisions that make tracking impossible or/and simply not profitable.
…and if I was looking for a hosted solution I'd probably go for https://www.discourse.org/ as it's open source and possible to self host if I'd like to migrate to that some day.
That's probably what Disqus would have said too if you asked them when they were in your phase. Privacy concerns aren't solved by promises, it's solved by infrastructural and technical decisions that make tracking impossible or/and simply not profitable.