I built a landing page for my "business cards" that is all about React, Bootstrap and all that, even uses Helmet when I really should have just set the title directly -- and it came out to around a 512k bundle so if you wanna impress me with an unframework page you got to get it down to 200k or less.
i'm sure your react site is fine, but there's a difference between a static site and a site with a blog, music player, custom (lightweight) telemetry. i chose adding as much features as i could fit in that limited space.