In this photo, it isn't the chain that broke but the connector. Do you remember if that was the case on the other ones?
I do see a cracked hole at the solid end, but it's impossible to know if it caused or was the result of the failure. I've heard of (but never seen) Sram link issues where links somehow manage to unlatch, which may be why Sram moved to links that latch positively.
Without assigning blame, if the prior failures were also at the connector, I'd look at another brand of chain, either Shimano which doesn't use connectors, or maybe KHS which does.
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