Some of them definitely are more like "Falsehoods the client/marketing/sales believe about search." e.g. "Search can be added as a well performing feature to your existing product quickly." Have definitely gotten questions about "why can't you just quickly add search" based on this falsehood before.

I think the name implies some frustration with stupid technical limitations many systems have. "What do you mean my password can't contain special characters? What are you doing? What do you mean my first name can't be more than 15 characters?" Stuff like that.

I think I believe this

"Search can be added as a well performing feature to your existing product with reasonable effort"

if you append

", as long as your existing product is one that would benefit from having search added to it."

to the end of it

Very much depends on what "reasonable effort" looks like.

If product management think it's "just point lucene at the DB.. maybe a sprint or two", then you're in for an interesting conversation....