Youtube Videos by KTMYannickThis fellow is boosting EXRO. He makes no claim to be an expert, but is still a good listen. If you haven't seen him, here are three links:
Feb 23 2022 - https://www.youtube.com/watch?v=wMbfVUK_cyk
Mar 03 2022 - https://www.youtube.com/watch?v=xTEIXiZoQzI&t=13s
Mar 13 2022 - https://www.youtube.com/watch?v=6G4DDrVe59U