How to benefit from --exclude-archs web.browser.legacy

I currently compile the meteor bundle using

meteor --release curr_meteor_release build --server {ROOT_URL} {METEOR_VERBOSE} --directory {BUILD_NODEJS_DIR} --server-only

then I launch the server using

node main.js

can either of these benefit from using the new --exclude-archs web.browser.legacy ?

from docs I only see mention using meteor run or meteor test

my meteor build consumes over 3 gigs of ram and chugs along for over 5 minutes so am looking to streamline this if possible

If this exclude-archs cannot be used for either runtime or meteor build time anyone have build efficiency suggestions to cut down on compile times or dev and/or prod ?

It typically helps during development wherein most of the time, we are not testing using legacy browsers.