You're kind of missing the point, unless you're saying that regular PostgreSQL also has interesting failure modes. PostgreSQL clustering may not be boring techn

You're kind of missing the point, unless you're saying that regular PostgreSQL also has interesting failure modes. PostgreSQL clustering may not be boring technology, but that just means you scale up instead of out. If you run out of headroom for scaling up, that probably means you're successful enough that you can take a look at non-boring technology.