I appreciate the ones that acknowledge that its probably them that deleted the page and broke the link, instead of saying "looks like you're lost"
The problem is too many search libraries on sites are anywhere from useless to completely broken, even for some household name brand sites. My go-to test is while on an existing product page to search for either some part of the product title or a snippet of bullet point feature verbatim, to see if the page I'm currently on gets returned at all. It's stunning how many sites fail this test.
A bit off-topic, but thinking about the costs to update a vector search engine VS retraining an LLM makes me a bit worried about hyperlinks all together.