I disagree that it removes any Freedom from you, but even if that were the case the damage would be so minuscule compared to the massive improvement for others that literally could not even install Debian on their system before.

And sure, there might be possible complicated work-arounds, but this issue has existed for years and no one bothered to implement them. So finally the silent majority took the right step to make this minimal impact change, and now the ball is really back with those complaining about this change. I am sure Debian will not be opposed to include some sort of selection in the boot process if someone would actually implement it, but that is far from trivial to do.