Beryllium dust is dangerous that is no doubt on that.
The tweeter have no beryllium dust so no danger here for the user.
But that is not the point, it's a basic point to use toxic/dangerous material or not, all over the world.
It could be done and has been done for many years now, the problem is that money drives all bad. So nobody is interested to protect people, only laws can regulate that. And laws are done from politics finally, and we all know the ethic and cleverness of politicians. Therefore only the last link in the chain can try to move things but is also driven from his "surround".
So you should have respect when people take care of another people even if it looks senseless on the first view. So just argue that already happened all over the world and products, only help that people they don't' care about another people. But maybe that cynical argument protects the poster from himself..
So not buying such products will help when everybody will do it and all the industry, but sadly that is not even a future dream...
The only thing is to force good laws to protect people in the manufacturing area but the production is done mostly somewhere in the world where even laws is science fiction.
But who really moves for the rights of another people?
We are just closing our eyes and mute our brain.
I know all that is very well known, but if nobody talk/acts about that, nothing ever will get changed.
I am also buying all that stuff and don't move for the rights, and need a kick in my ... to not only speak and write and do nothing.
800v3/218/271/8k.2/5k5s

/5kC/DSP3200/Reviver/
TT-ELP/Graham Slee Revelation/Trinnov Altitude 32/OPPO 205
__Ayon/HB/Shunyata/Miltzow -- power cables,
__Ayon/Jungson/Miltzow --analog, Miltzow-- digital,
__Vortex/WMA ,