Yes, M9. and all Mahler for that matter, are so important to me that I strongly disapprove of any interruptions. It does not show respect for the music, the musicians, the conductor, or the audience.
From what I read in the newspaper stories, the "alarm" continued for several minutes, resulting in the conductor being distracted and asking the man if he were ready to continue.
Yes, I could stay home and listen to Mahler recordings, but I feel cheated to be forced to give up live performances.
A person who does not know how to drive a car should not do it, and a person who cannot keep his cellphone quiet should not bring it or be certain he knows how to silence it before interrupting a performance.
Mahler is too sacred to me to have disruptions. I know what Mahler would have done, had he been conducting, and it would likely have been more harsh than the conductor involved here.
Yes, I understand that everyone wants to be compassionate, but it should also be a two-way street: those attending live performances owe it to the music and music-lovers not to detract from their enjoyment.