To claim that a past mass shooting event seems rekevant today does not necessarily mean the person who claimed it is relevant today intends to shoot anyone

They could mean it is relevant because we should try to prevent another mass shooting from hapoening or numerous other potential meanings

But someone was allegedly arrested for claiming a mass shooting is relevant today in a social media post

https://www.yahoo.com/news/articles/tennessee-man-arrested-gets-2-164634732.html

This is not rekevant today

I do not intend to commit a mass shooting