So then the only theoretical limit on black hole mass would just be how fast you can put matter in black holes and/or merge existing black holes versus how fast the universe expands?
Not to be that guy, but a physician is a doctor.
In the time that it took you to type that response, you could have learned 10 new words.
I do it because I appreciate it when people do it for me.
That was the purpose of my comment. What was the purpose of yours?
I try to remember that when I'm tempted to point out mistakes that are fine to overlook.