Hello, the resources that I cited were the publicly available resources in JOSM.  Strava does not have a confirmable date that I know of. The most recent date of OSM GPS traces varies by area, but the most up to date trace is 03/09/2023. Esri World Imagery is from 01/23/2023.  At this time, I do not have anything up to date to confirm the current extent of flooding in Brazil, and I will defer to your knowledge of the area.  Thank you for providing an update and for maintaining the flood impact in Brazil.  
Have a nice day,
suchAnight