During the COVID-19 pandemic, the Federal Government of Brazil, a publicly and avowedly denialist government, adopted various measures in the face of the epidemic outbreak. Several of them led different political parties to file lawsuits against them in the Federal Supreme Court (STF). Our hypothesis is that this process does not represent a case of systemic corruption and that the pandemic did not generate a crisis of de-differentiation in the social systems. In this sense, we observe that these systems, as learning systems, operated their self-observation both at the operational and structural levels, and even in their own reflection in the face of the contingencies that arose during the pandemic. Thus, the complexity gradient (its system/environment and intersystemic relations) remained (re)stabilized in functionally differentiated terms and did not register problems of operational autonomy during the period. The first conclusion is that the theory of society as a communication system is a theoretical contribution fully applicable to the observation of regional objects in Latin America, even allowing us to observe communication at a distance from ontologisms, normativisms or ideologisms. The second conclusion is that our hypothesis has been proven because we have not failed to distinguish, for example, political communication from legal communication.Durante la pandemia de COVID-19, el Gobierno Federal de Brasil, un gobierno pública y declaradamente negacionista, adoptó distintas medidas ante el desarrollo del brote epidémico. Varias de ellas llevaron a distintos partidos políticos a accionar legalmente en su contra ante el Tribunal Federal Superior (STF). Nuestra hipótesis sugiere que este proceso no configura un caso de corrupción sistémica y que la pandemia no generó crisis de desdiferenciación en los sistemas sociales mencionados. En este sentido, observamos que estos, en tanto sistemas que aprenden, operaron sus autoobservaciones tanto en el nivel operativo como en el nivel estructural e incluso en su propia reflexión ante las casualidades suscitadas a lo largo de la pandemia. Así, el gradiente de complejidad (sus relaciones sistema/entorno y las intersistémicas) se mantuvo (re)estabilizado en términos funcionalmente diferenciados y no registró problemas de autonomía operativa durante el periodo. La primera conclusión es que la teoría de la sociedad como sistema de comunicación es un aporte teórico plenamente aplicable para observar objetos regionales en el ámbito de América Latina, permite incluso observar comunicaciones tomando distancia de ontologismos, normativismos o ideologismos. La segunda conclusión es que nuestra hipótesis ha sido comprobada porque no se ha deja de diferenciar, p. ej., las comunicaciones políticas de las jurídicas.