You are free to disagree -- what interests me is the basis for your disagreement.
Ajee Wilson ordered beef at a Jamaican restaurant, not a food truck. Lawson ate a beef bowl from a Japanese restaurant.
After the experiences of Lawson and Wilson, there is no obvious reason for any athlete to avoid food trucks. It is also not obvious after these public experiences, where it is safe for athletes to buy meat in the USA. Who can they trust, and on what basis? We see time and time again, that USDA approved meat can contain sufficient quantities of banned substances, including nandrolone in pork, that can produce the small amounts found in Wilson's, Lawson's and Houlihan's samples.
The difference in these cases is that Wilson was prosecuted by USADA, who is sympathetic to the athletes in cases of potential accidental ingestion (helping 27 athletes arrive at no-fault convictions), and Lawson was able to appeal to a sympathetic CAS panel, who discounted misleading "expert evidence" that materially lead to the initial conviction, and was persuaded that although, like Houlihan, Lawson didn't actually prove the source, Lawson did the most he could in his circumstance and that that failure to prove the source still met the burden of persuading the panel of "not intentional".
I don't find Houlihan's performance improvement suspicious -- many athletes have similar breakthroughs after years of training (e.g. Wejo after 5 years of university) -- so these arguments that doping would be more likely fail to persuade me. It looks more like confirmation bias from those who believe that such performance improvements are more likely by doping.
As a premed student, surely you must know what "first pass filtering" means. The small amount of nandrolone found (recall WADA routinely expects less than 10ng/ml from intact boar ingestion, and occassionally much higher), and the undisputed point that it was ingested, and the fact that most of the nandrolone is filtered out on first pass, never making it to the blood stream, suggests against any performance improvement effect from the small percentage that did enter the blood.
Not sure what to make about your CSI/forensic science experience. The sample analysis is right, but the questions that arise after that are all legal or mathematical in nature: In the interest of justice to the athlete, should the AIU have treated the result as an ATF, despite the WADA lab reporting, as foreseen in the WADA TD2021NA? Should the AIU have relied on the CIR test when the TD2021NA says it may not be used to determine exogenous origin? Did the AIU model and argue the right probability of a scenario that presents 121,000,000 opportunities per year for an unlikely "less than 1 in 10,000" event to occur?
Your other facts only become relevant after someone has made a correlation between 3rd world (or 1st and 2nd world) performance and doping, and whether testing (that is reportedly easy to beat for the sophisticated) is a deterrent, or has any negative correlation with performance. These correlations have yet to be established.