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I don't think 121 kb is a lot, as people nowadays demand rich media content, and even a lookup on the native Yelp app can be thus expensive.

121KB Javascript. I wasn't counting the images - the actual, rich media -, or the content itself.

Once, it's fine, but this is a singe page with 121KB. Forget the in-browser cache myth: it may have been true the jquery got included directly from a cdn, but in the era of compiled JS apps, it's long gone, meaning it's 121KB JS for every medium page you visit. It climbs quickly, especially on capped smartphone data plans.

Even if the site is using a "popular" CDN, which does it use? Google? JSDeliver? Cloudflare? Unpkg? Which specific library and which of its versions? There are too many CDNs and library versions to carry the advantage of caching across different sites.

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