In patch 2.0.0, the Spirits glitch with Olimar has been fixed. Presumably this means that his vanilla glitch has been fixed as well, so he is once again allowed in ASMR tournaments. The associated pages will be updated to reflect this.
In other news, there is a small change with the patch that affects Ω stages. According to Nintendo Soup’s article here, respawning on Ω stages will now place them in the center of the stage instead of off-center like they were previously. I don’t expect this to change much in ASMR tournaments, but this could have an impact on tournaments that only use Ω stages.