I feel you have gone too far in compacting the buttons on the listing display page:

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I like to think I know my way around the site, but even I had to click on the ADD button to find out what purpose it served. I guessed what ASK and WATCH did - but anyone new to the site likely wouldn't.

There seems adequate surrounding whitespace at all viewport widths to leave the buttons full size, with full captions, and stack them at narrower viewport widths.