Interesting thread... Reading through, I think there are two levels to this issue.
On the first level, can a group adopt specific rules of order, not in conflict with fundamental principles or higher authorities that permit this zoom/online procedure. Yes, in principle the procedure as outlined here doesn't cause a problem as long as the participants can unmute themselves. My thinking is thus, the procedure is fine if the practice of having participants use emojis to be recognize by the chair unless the need arises to engage in rising for either a point of order or appeal or some urgent matter that requires interrupting the speaker. Take for example the issues raised in 62:7-9. These would almost always require that a member unmute and speak in a manner that didn't have recognition from the chair. Thus, in my view while I think the procedure itself is fine, it is an issue if members do not have the ability to unmute themselves.
To summarize, another way, I think the issue isn't that members are muted on zoom, but do members have the ability to unmute themselves to exercise certain parliamentary rights? So it is not the issue of being muted, but the ability of members to unmute if needed.