Hi Pedroo, I'm so sorry if Masa make you disappointing
. Its all my false, but please allow me to explain about the crotch blowout.
Crotch blowout can happen to any jeans and brand that come with very tight at hip and thigh, I'd say its all about the cutting not about the quality of jeans itself or the fabric quality.
Someone said he can't get on his bicycle, this reflect that jeans' hip and thigh are really narrow and tight.
In this case, I've to say sorry for make the cutting too tight at hip and thigh, then crotch will receive too much tension when people wearing them and then blowout easily.
I promise I'll reconsider about the cutting and improve the cutting for the best fit and comfortable and durable.
ps. My old model, such as Aviator or the oldest one that I gave to farmer to test, didn't have a crotch blowout problem because the have a regular/big top block. So I'll merge those idea to gather and make the great jeans for you.