Hello,
Yes, unfortunately this is the case. Some of the knockout.js templates use HTML comments that have special semantics for the knockout framework. These are comments of the form <!-- ko: ... --> See for example “containerless control flow syntax” in https://knockoutjs.com/documentation/if-binding.html
If you can filter out all comments besides the ones that start with ko: then you should be ok, but other than that, unfortunately the plugin relies on these.
with regards