Can I disable pinch to show all open tabs in Safari?
You can disable this feature in Safari, but it will also disable &quot;Zoom in or out&quot; in all other apps.
System Preferences &gt; Trackpad &gt; Scroll &amp; Zoom

I actually had to check the &quot;Zoom in or out - Pinch with two fingers&quot; box to even figure out what you were talking about.
Limitation: This disables the gesture in more places than Safari.