Surely if you mined on a small PPLNS pool then you would care if a block was missed due to it having a massive impact on your earnings along with everyone else on the pool.

The bigger the pool the less likelyhood of it having an impact on you, especially if the pool is PPS

But the danger is, it is all relative, if a big pool is losing blocks due to bad code or infrastructure, or you build a big pool based on bad code or infrastructure then it does become a big deal. Because a big pool will lose lots of blocks, or at least potentially a string of them before its noticed and something is done about it.

Fact is some big pools have lost lots of blocks due to either bad code or due to not being aware of what is going on down to the minutiae of information or not having the log files to check back, or just not caring. The history is there to see.

I can understand it not being a big concern on your part because of your mining strategy, although I would question why anyone would continue to mine on a solo pool that has demonstrably lost blocks on more than one occassion. The potential loss of earnings is just too high.