She may get called an Olympian, or call herself an Olympian, but this is going to follow her. Maybe she comes back in 2028 and can erase it (but she will have to put together some healthy seasons). If she doesn't, whenever her name is mentioned, she will be the Olympian who knowingly ran injured, with an alternate onsite who flew at her own expense in time to compete, only to limp along and DNF at, what, 1 mile? I'm not sure this is worth endorsements and speaking engagements. But maybe I'll be proven wrong. Time will tell.
If nothing else, we can try to understand why she made this decision (self-interest, best interest of her coach/agent), while also recognizing the decision will hurt her credibility with fans and casual viewers, general credibility of the sport, and realizing we need a new system that doesn't incentivize severely injured athletes to line up knowing they will not finish, limp a couple meters, and quit.
Also, it will be interesting to see if marathon alternates ever take the risk to fly across the world again, knowing that coach/agent, athlete, Team USA docs, etc. would rather allow the original runner to limp a few steps, rather than let the healthy runner compete.