I don’t doubt that. I doubt that some random redneck white guy built such laughably shitty pipe bombs. Look at this fucking trashy excuse for an improvised explosive:
This thing is like a movie prop. The pipe is too narrow to hold effective quantities of any easily available explosive, there are holes drilled in both end caps, and why the fuck would there be a digital countdown timer? What use could that possibly serve? Are you going to give your intended victim 30 seconds to calmly evacuate the room? Where’s the battery, or the detonator?
Compare that to a much better pipe bomb design:
Note the dime for scale: the pipe is almost twice as wide. The single hole is drilled in the center where it will encourage fragmentation and limit gas leaking during detonation. It uses a simple pyrotechnic fuse and may have wire wrapped around to add more fragments. This fat sucker would be highly effective, even after adapting it slightly for an electric detonator and a cell phone/radio trigger.