I must admit, I find the Blackstone comments dubious here.
First, I presume the "T5 5w-40" is actually T6; just a typo in the UOA report?
Let's recap this UOA for quick viewing:
TBN is STRONG after 14k miles
Insolubles are crazy low (almost non-existent)
No contamination (fuel, coolent, dirt, etc)
The FP is fine
The Vis is fine
Wear metals are mixed; some wear rates are lower than average, some are slightly higher.
In regard to wear, the Fe and Al are above "average", but no where near any danger in regard to condemnation levels. The Fe and Al are likely slightly elevated due to the high-power tunes you use. The super-low to non-existent Cu and Pb indicate no bearing wear at all. So, is the Fe becoming abrasive? Possibly so, but not to a point as to condemn the oil; not yet anyway. It's hard to say with complete certainty because the "universal averages" don't reflect a lot of "tuned" Dmax's. I suspect if you cut back the power to normal levels, your Fe and Al would drop to at or below universal averages. IOW - the oil is doing a great job given the situation you've put it into.
Often, dino oils can give really good numbers like this up to 10k miles or a bit more at times. You paid at least 2x the $$$ for the T6; to get your ROI you'd need to run out to 20k miles just to break even. There is no reason, with this type of UOA performance in your rig, that you could not go 20k miles, or maybe more. If this were my set-up, I'd run to 15k miles on the next UOA, then 17.5k, then 20k, etc. Escalate up slowly as you build UOA history.
You should be increasing the OCI with results like this! The only "abrasive" here is their suggestion to reduce the OCI, in my view. Why they advise to cut back is beyond me ...