I think your are biased when the subject is Spark, so I think there's nothing I can do more to try to convince you. You have easy docs, search mode on docs in IA mode, you have videos that is not promotional videos. You have everything. You think that the trust model is the same as a custodial solution, something that is very easy to understand that is not. I understand that you have no interest in integrate it, and it's ok. Maybe someday if you have a really genuine interest to look on Spark with not a biased vision, you can change your opinion.