Now I know we mostly hate walled gardens, but the advantage of many walled gardens is their well-known address and well-known contents. Today on the web, I rarely need to hammer on a search engine for anything day-to-day. If I want to query government databases, I know where to go. If I want the weather forecast, I got it. If I want to buy stuff, Amazon and eBay are right there in the URL bar; only boomers search by name!
I don't know how unique my usage pattern is, but I navigate less by bookmarks and more by autocomplete. I just go to a top-level domain and there I am. Bookmarks are for the deep links I've set up for certain properties. Search engines are for the utterly random, frivolous searches on stuff that can't be found in Wikipedia, or LinkedIn, or a known domain name.
In these days, I would do better with a personalized curated portal more like Yahoo! was. I would prefer a menu of sites, although there is nothing wrong with my autocomplete-navigations. For asking those frivolous and left-field questions, we've got LLMs now, and I feel much more comfortable conversing with a chatbot, and getting deep into a rabbit-hole, than clicking random, possibly hostile foreign links through a search-results page.