I hope so.Seems like eventually someone is going to have an epiphany (O-SH*T moment.)
However I think part of the problem with this particular malfunction is that there are so many pathways to failure, it’s hard to isolate one specific flaw across the board.
There have been a rash of trucks with DPF’s that failed internally. Some trucks needed the newer style MAF. Some trucks have faulty EGR valves….and on and on….
The more they over-think the plumbing, the easier it is to stop-up the drain.