The US, GB, Australia way of writing numbers is 0,0.0
Yes, and they are only a portion of the world.
https://en.wikipedia.org/wiki/File:DecimalSeparator.svg
I could argue that it would be confusing for these people also if I choose to swap '. 'or ',' or started to do my own thing.
From the point of view of a german, do did swap "," and "."
Now I have looked into all the BX for the popular coins and they all follow the 0,0.0 way of formatting numbers.
Some sites imply shows the numbers in a way typical to your region. For example, coinmarketcap.com shows it as $999,99 for me, but $999.99 for you.
It is not the end of the world, only a minor point, but it can confuse people.