Basically 90% of tire installers I've seen...maybe 95%, find about any way possible to 'try' to speed up the process and skip critical install and especially balance steps that can lead to premature tire wear/problems. So to blame the tire mfgr w/o actually knowing the quality of the balance job is a tough call.
Ask yourself, when was the last time you saw a guy partially inflate a tire and attempt to 'releive stress' on the bead ...to settle it as best it can be? Answer: Never
When was the last tire tech you saw inspect the tire/wheel on the balancer for out-of-roundness or side-to-side movement as it was being balanced? Answer: Never. That's one of the first and most critical balance steps. Many balancers will attempt to balance about any tire. Add weights and it's "Balanced". But that didn't correct any out-of-roundness, or identify a potentially bent wheel.
When was the last time the shop's balancer unit re-set and properly re-calibrated? I've asked tire shops and the answer is, "What??!" Probably not since it was installed. The exception might be certain chains which the balance tech might come in on a scheduled basis to re-calibrate. It's a good question to ask.
How many techs forget to remove the old weights or don't want to scrape them off? Answer: More than you think
How many tire techs hammer on the wrong ill-fitting weights? Answer: sometimes. Ill-fitting weights can fall off prematurely.
Bad shocks can also cause tires to go out of round. Worn suspension parts and wrong inflation can cause other tire problems.
There's lots of reasons that can cause premature tire wear and bounce, not due to bad tire workmanship. We have no idea what the deal was on the OP's (or anyone else's) tires who claim xyz tire only lasted abc-miles. At least if tires are Road Force Balanced on a Hunter machine, it helps eliminate the guesswork out of the balance job. If in fact they were doing it right and not bypassing the R/F process.
That's why I advocate standing RIGHT THERE and eagle-eye-ing the balance guy. Preferably do it in the summer when the overhead doors are usually open. It's your money and a fairly large investment. Some tire techs are great, and DO a fantastic job. But it takes more time to do it right and that's not something they always have (per the shop's schedule). Don't be afraid to bark out "Ideas" if you need to, to insure critical steps aren't skipped.