Who do you mean? Should be reported here by OP who faced the issue:
https://github.com/puppetlabs/puppetlabs-mysql/issues
Only the Puppet MySQL module developers will know whether they need
plain text logging for some specific reason and how to hence address
this best.
Bookworm (and hence this change) is in "testing" now, in hard freeze
stage of the upcoming Debian release. So a pretty perfect time for
testing and reporting issues as of changes like this to software
developers to update their software. And optionally to make it more
compatible in the same turn by not relying on the existence of
explicitly configured directories ;).
