13.17.2-3.shmz65.1.183 is now live which as you can see has BETTER_BACKTRACES.
The same applies to Asterisk 14 as well
freepbxdev1*CLI> core show settings
PBX Core settings
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Version: 13.17.2
Build Options: DONT_OPTIMIZE, COMPILE_DOUBLE, BETTER_BACKTRACES, OPTIONAL_API