Arguably not. BC pipes are cheaper than just about any alternative, and can be faster than anything aside from AE and RotaryCraft.It also has an annoying tendency to drop anything it doesn't know what to do with on the ground which can lag out a whole server if you aren't careful. I much prefer Ducts as a whole. They're just... cleaner.
Pipes were okay back in the day when there were no alternatives. Then RP2 Tubes showed up and they were only used very early game before you had brass up and running. Now we have alternatives that are strictly superior.
I do admit I am not fond of the item spilling mechanic.