That would be a no if the Bearing where taped together as a set they are not factory packaged that way, there is nothing wrong with universal Ground they just cost more to make as you have 2 extra face's that have to be match Ground
Sales people will sell you what ever they can get there hands on, you can always buy any of the configurations if you have a need DB / DF / DT if you know where to look, if you can't get what you want then any Bearing with the right spec's can be Ground to give any preload you want, I have done hundreds of regular AC bearing this way by Grinding them to any of the required spec's I mostly only do Back to Back and matched sets of 3 and 4 Bearings it's a simple process, you measure the Bearing OffSet take them apart and Grind where needed, demag and clean then reassemble no more to it
Universal ground is by no means the name of the game as you put it, it is just a convenience for the Bearing seller ( less stock to carry ) so those statements are not correct or true in any way
Triple and Quad sets can be a better buy as Universal, the reason the installer have a better chance of installing them correctly and for those that don't know what they are doing when installing Bearings sets like this