Actually, I don't feel frustrated at all
In fact, I'm quite satisfied and content that these dudes left Bitcoin, hopefully for good. Regarding the marketing issue, now we see how it backfires when people start to realize that it was all inflated hype and no real value behind it. Roger Ver offering OpenNode (a Bitcoin payment processing company) $1.2 million to switch away from Bitcoin to Bitcoin Cash was really pathetic if true. They dance on nothing and they know it
Other than that, it is not about code or marketing as it is about utility, i.e. capacity for satisfying needs. Do you need to proselytize the US dollar? It's the same with Bitcoin. It is services which make use of it that need to be marketed in an unobtrusive and smooth way