@BatmanAoD Whatever tool people are using for their issues and/or PRs and/or VCS
And it's not about trusting the tool but trusting that the tool will always be available. Whether due to discontinuation of the tool itself or due to discontinued use of the tool and replacement by something else...
@BatmanAoD so far I have seen more issue-trackes come and go than VCSs...
So yes: Training developers in commit-discipline would for me not be wasted time and money.
Cause from what I have seen so far the question is not *whether* the issue tracker changes but *when*.
But OTOH: That's just me (and some companies I worked at).
YMMV