>>1301341My thoughts as an owner of the product. Not trying to shill it or anything, just addressing your points.
>>0.6L capacityI've never had an issue with this amount during hikes and backpacking trips in my home province (Ontario), or across the Northern States. In non-arid areas you can always find a stream or pond to refill at when you need it.
>>flow rate measured in drops per decadeIt comes out as fast as you can suck, at about the same rate as a regular straw. It's mean for 1 person drinking, not to purify a pot of water.
>>cheap, easily-breakable bottleI've dropped mine multiple times, both full and empty, including directly into pavement when full. No major cracks, only a minor leak when the straw itself isn't installed and it's turned upside down.
>>realistic filter life of only about 200LThat's what replacement straws are for. I've had mine for a year and haven't had to replace it yet.