"Polished" for search engines maybe. Bad UX is rife across most commercial sites, with intrusive ads and social trackers being the worst offenders: autoplay videos, on-scroll triggered, page re-positioning, Taboola garbage, increased load times.

All of this made the web worse, not better. "Gentrification" as it relates to neighbourhoods at least means access to better amenities. When it comes to the Web, Wikipedia offers "amenities" in the way of easily accessible, extensively cited information. Most websites on the other hand gatekeep content via email signups ("get my free ebook!"), and the content itself is basically lead gen for what ever product they're pushing.