That's what I meant. I find this a very interesting OEM approach. Though using BTS and zeroing out KFFLDBTS is also a logical approach imo.
The reason on BAM BTS is not used is because it has wideband EGT and it runs LAMFA and then ATR to control exhaust temps.
If you are not using a such strategy and don't have wideband EGT then zeroing KFFDLBTS is a really shit idea.
It ensures that once you get a batch of bad fuel you will have engine damage on a long WOT run.
DLBTS should be set so that under normal conditions there is no additional enrichment, and after that it SHOULD enrich otherwise you're going to melt something.