Sorry, I am probably missing something very obvious to others, but who is Bruce? How do you know that he will be one of the people who takes the mark of the beast?
"Bruce" could be anyone, eg you or I.
Put yourself in the place of Bruce.
If you were 'Bruce' would you take the MOTB so as to save others ?
Would you be prepared to act as Moses did in Exod 32:32, Num 11:11-15.
..
Scenario :-
The Rev 14:9 MOTB is now a reality.
Bruce is a Saint in the eyes of everyone that knows him
Bruce and all his family, friends & associates are rounded up.
Some are Saints, others are not.
Until Bruce takes the Rev 14:9 MOTB he & everyone will witness one by one the execution of that group.
If it were you, how long would it be before you took the MOTB to stop the executions ?