I stumbled across this issue myself the other day and came up with an easy javascript method to do so - it’s not perfect in terms of security, but works if you just want to hide the icon.
Just add this to “Custom Script for Logged In Users”:
var rcxAvatarCheckInterval = setInterval(function() {
var rcxAvatar = document.querySelector('.rcx-avatar');
if (rcxAvatar != 'none') {
clearInterval(rcxAvatarCheckInterval);
var username = rcxAvatar.getAttribute('aria-label');
var membersList = document.querySelector('.rcx-icon--name-members').parentElement;
if (username != 'markus') {
membersList.style.display = 'none';
}
}
}, 500);