I do think there is a legitimate criticism in that USFSA was obviously considering things beyond the obvious.
All they listed as factors was "results of events" - which is very vague. Does "results of events" mean the final placement, the BV each skater achieved (accounting for <, <<, and !/e), final point total, number of falls, etc.
When asked about Ross being left off after the fact, they mentioned a huge factor was his international scoring history and international scoring potential - neither of which were explicitly mentioned. In fact, most of us interpreted "results of events" to mean placement in those events, not the score sheets.
One of the things USA Gymnastics does well about their selection process is creating criteria for their athletes to follow. Some are very specific (highest start values at competition, highest execution scores at competition, consistency), while some are more vague ("world class presentation," "physical/competitive readiness," "ability to contribute to the team," and "professional attitude"). That gives USA Gymnastics ways to justify who they send while giving themselves some leeway to pick one athlete over another based on their own preferences. Of course, considering the recent scandals, one wonders if the leeway they gave themselves was to shut people up or encouraged athletes to train in an unsafe manner, but that's a different matter entirely - one that hopefully will never transfer over to USFSA. Based on the statement about the team selection, it does seem like USFSA uses similar criteria, even if they don't outright state it or directly observe it in training for weeks on end.