@Wouldiwas_Shookspeared I agree. I know it makes it consistent with the other button sizes, but it is just too big. At the very least a setting to make it compact would be nice. Maybe a setting to make all of the buttons a little thinner would be awesome.
I think the size is good and doesn't need to change. google chrome is too compact and everything is so small but Microsoft Edge has bigger UI and it's good for touch screens too. It's Not too big, just the right size. also you don't have to keep all of the extensions visible, you can drag them to the right side menu and put them there.
I have to agree with Hot CakeX. If it's too compact/small it starts to look jumbled and cramped together, and if you're like me that uses a large mouse arrow icon it can cover over two extension icons at once. The icons on Google Chrome are too small and cramped close and need more space apart. Edge in my opinion sort this out by giving more space distance and larger size to the extension icons.
@Wouldiwas_Shookspeared I like your idea, maybe they can also add an option to be able to manually set and adjust the spacing of icons in the toolbar so each person can change the spacing according to their preference.