I’m not overly familiar with Barlow so more research is definitely in order - he appears to be a big topic. Mainly know of him from listening to Adam Curry and John C. Dvorak talk about him on No Agenda. JCD knew him well. Sounds like a very interesting person. They also discuss the FOTPF/Snowden/Assange but I think its from between the first mentions of Barlow on Q and his death and I haven’t located the clips yet. They may be in 2017 when FOTPF announced the cut with Wikileaks timeframe. I knew Barlow’s from Q and it caught my ear especially since it sounded like there was a known threat against him in the Q posts.
I know Barlow tweeted a lot about his health and thought his doctors were harming him. Also, there are several references that his death was reported prematurely earlier - in 2015 I think.
If he got away from whatever was attacking him, he may have gotten quite a bit better physically. Still these rallies last a long time, he made his appearance and then went to sit down perhaps? I imagine avoiding assassination is tiring - best way to get people to stop trying to kill you is to make them think they already have.