Why is brltty not removable on my Mint system?

I am not blind and I do not own a brail tty machine so why can't I uninstall the brltty software?

'aptitude' simply refuses to remove it and 'apt' will remove it along with about 2/3rds of the system but warns that it is a very bad idea. Just brail? Really?

Thanks for any enlightenment you can shed on this seemingly 'crucial' package.

Best regards,
BobG