I feel the same way; we use Gitlab in our day to day, and often I find myself writing a long reply after fixing a code review issue, describing what I changed, resources used, etc... then hitting the "resolve" button, which collapses the comment and unless the reviewer has enabled notifications and actually reads them, I doubt they would ever see my well thought-out response.

But then, for me, writing is a way to organize thought as well, plus these remarks will stay in the thread for future reference. In theory anyway, in practice it's likely they'll switch from Gitlab to something else and all comments will be lost forever.

Which makes me wish for systems that archive review remarks into Git somehow. I'm sure they exist, but they're not commonly used.