Everyone is afraid of quantum computers, but apparently very few people realize that it will be a long time before such computers are powerful enough to compromise the cryptography that protects not only BTC but everything else in digital form. I've never liked them and companies like them, especially when it's an open secret that they're there for profit and don't care 1% about BTC.
What's the next news? BR propose a BTC hard fork that will be resistant to quantum computers?
If they (BR) had truly concerned about this, they would have ignored Bitcoin rather than invested their money in it and other resources for Bitcoin Spot ETF application and operations with many related products and issues later.
They know that quantum computers are threats in future (but probably not near future) so they only wanted to create fud that, in their hope, can trigger market crash. So they can take advantage of panic in the crowd and consequent market crash for buying bitcoin at cheaper price.
Frankly, if they truly worried about it, they would silently make their exit from Bitcoin market to maximize total capital they can get back.
In reality, they did oppositely than all above things, so it's not their true concern at all.