Maybe. But most people's problems with Lucene/Elasticsearch aren't really speed. They use Lucene because its feature rich and been worked on for almost two decades. And there's plenty of strategies to mitigate any speed problems (caching, sharding, etc) with lots of knowledge spread throughout hundreds of orgs to the point where "making Elasticsearch fast" is something you can hire someone for. Lots of sunk cost in the Lucene stack.
Not saying what you're doing is without value. Just be conscious that "speed" is only one of many, many factors when evaluating a search engine. In fact, as someone who regularly helps clients evaluate search solutions its very rare that it comes up. "Fast enough" with the right features for the problem is really want people want.