Yeah, the point that the musicians seem to be making, from the very brief quotes he shares (I haven’t been following this independently), is about the efficacy of music boycotts as a tool for political change. You can object to a nation’s political actions and still think that performing music for your fans in that country will make things better.
The author just insists that Israeli government genocide is bad and that the ordinary citizens are complicit. I think the implicit logic must be: bad people should be punished, depriving them of music punishes them. While it might satisfy a craving to hurt the bad guys, I think it’s much harder to claim that this would help stop the genocide.
I think the musicians have a stronger case that actually performing would be more likely to change people’s minds and improve the situation. Plus the broader benefits of keeping music and art apolitical, rather than trying to make everything in life a tool for political manipulation. I’d have actually been really interested to hear some substantive arguments about those points, but was disappointed to discover that, as you say, it was just a hit piece.