Why would I do that? We're in a field where:
1. The job market is incredibly tight and poised to substantially worsen with continued increases in residency numbers, increasing hypofractionation, and APMs becoming the norm
2. "Job lock" is and always will be a concern
3. Academic programs are growing at a rate much faster than others
4. Academic personalities in our field have shown themselves to be vindictive, dishonest, dismissive, and arrogant (recent Twitter posts calling concerned doctors "trolls", glorifying themselves through ridiculous Teddy Roosevelt quotes, the MDA oral board gyn reviewer who failed all of the Joint Center's residents ~13 years ago for using HDR because she personally disagreed with it, the recent boards fiasco and lack of admission of any fault, "I hope he fails", how Dr. Shah was treated when he brought up the issue years (!) ago, "bait and switch" satellite job listings becoming acceptable), and as a result I have very little faith that anything I bothered to say would have any real impact.
Although I'm in private practice, I still do have a few cooperative projects with academics I'm working on. There's a non-zero chance that engaging with the radonc twitter world could harm either potential future job prospects (if needed, hopefully not) or current research projects. There's a very, very small chance, based on what I've seen from the twitter crowd so far, that they would bother to engage in an actual discussion, but would very quickly resort to name-calling/burning of the heretic at the stake, etc. Why should I bother? I only see potential downsides and no possible benefit.