Eh. SpaceX is very conservative in many ways. Part of the reason they've been so successful is that they've taken tried-and-tested rocket designs and just refin

Eh. SpaceX is very conservative in many ways. Part of the reason they've been so successful is that they've taken tried-and-tested rocket designs and just refined them to be more efficient, rather than trying something brand new and exotic, so I wouldn't say it's a bad thing they haven't had any "spectacular failures." It just means the core technology is finally getting mature enough to be reliable and cost-effective, which is a good thing.