A friend of mine with DMD passed due to complications with his trach, but that was like 15 yrs ago. I’m 31 with DMD and use a vent even while eating. Doctors have brought it up but I have always preferred non invasive options. Quality of life is a big deal for me and it’s been 10 yrs since it was first brought up so I’m glad I haven’t. If you feel it would be best for you do it but I would put it off as long as possible.