hello @krypto.piotr,
personally I think the way the creators of rubinia have announced the project was quite bad, if it wasn't for the tutorials of @josevas217 I would have found it hard to invest in rubinia, another point is that normally the user is only interested in getting the answers to three questions " what is rubinia, how do I use it and finally what is the benefit? "If these three questions are not clear, people are likely to lose interest.