Yes, keyword-based matching is more than good enough for the use case. It doesn't justify bringing in trillion dollar companies to subsidize the costs.

Even if you wanted to go beyond simple keyword matching, there are ways to determine relevance before jumping to the shiny new overkill solution.

Also for everyone's sanity, please don't turn a troll's false accusations into a cynical argument for more LLMs. That's what drives to people to reach for solutions like the one in the article in the first place.