I hate to defend Flash in any way, but even it were a crash, how do we know Flash caused it? Yes, I have my own problems with Flash and love to hate it but it's

I hate to defend Flash in any way, but even it were a crash, how do we know Flash caused it? Yes, I have my own problems with Flash and love to hate it but it's really not being honest. These other possibilities that should have been apparent from the beginning have me surprised by the reaction.