Please add a simple way to disable icon's showing in the tab bar
But why? Icons are apparent way to distinct tabs.
See

There is already the text which is sufficient to distinguish the tabs, plus the icon is not resolved correctly (some antialias issue?)
You may disable Tab Icons via TabIcons option in settings.
how? I'm looking at the General/Tab bar settings and do not see this option
thanks it works, but why not add that to the settings menu.
BTW the title bar icon does not update when switching to a different tab with a different icon. It remains fixed to the icon of the first tab.
Updated to request adding the option to the settings GUI
@Maximus5
But why? Icons are apparent way to distinct tabs.
I don't like icons too: they're too distracting.
See the screenshot:

First, the tabs themselves are indistinguishable and there's no way to tell which one is currently active.
This issue has already been discussed here: https://github.com/Maximus5/ConEmu/issues/1603
And you said that there's no way to highlight somehow the current tab because the tab control is a windows native one.
Perhaps chrome tabs component would work better.
It's a suggestion.
Second, with all those "cmder" green icons it's really cluttered up there and not clean making it even more difficult to find the current tab (and to find other tabs).
When all icons are the same there's no point in having them around. Contrary, they become a distraction.
I used the TabIcons setting you suggested and it works.
<value name="TabIcons" type="hex" value="00"/>
Isn't it a question for cmder?
In ConEmu you have different icons for different shells by default.
I think the problem would still apply without it, if you say have a lot of the same shell open (IE your preferred one). Cmder just exacerbates it by giving everything the same icon.
I mean (my way) you may define tasks for your tabs with specific initial path, environment and of course the icon.
That doesn't mean I stop improving TabBar, just a note about current abilities.
Most helpful comment
https://conemu.github.io/en/ConEmuXml.html