If pressurizing growlers works for you, then go for it I guess. Other than the fact that standard beer bottles are sold and exchanged in the millions on a daily basis through commercial beers and hobbyists, largely without exploding, I certainly don't claim to have any data or results from scientific experiments or whatever to prove the relative efficacy of a growler for doing the same task. My point is simply that different vessels are designed and intended for different purposes and for me, there's no good reason whatsoever to "test" the ability of a 60oz glass jug to hold internal pressure when it is so dead easy to find containers that have such extensive track records of safely holding beverages under pressure.
I mentioned the 2L soda bottle not because it's something I would choose, but as an extreme example to illustrate how readily available carbonation-pressure-friendly containers are. It's ugly but it's essentially free, it's functional, and it's effectively bullet-proof in terms of its ability to safely hold pressure from carbonated beverages.
If you've had 10 bottles blow up then I'd say something's off; that shouldn't happen if you're even approximately following a sound process. Before moving to kegs I filled a few thousand bottles and I definitely had some gushers and the like, but not a single grenade. And I am definitely not a process nazi.