Chameleon Templates and Xml

Hello

is not

https://docs.plone.org/4/en/manage/upgrading/version_specific_migration/p3x_to_p40_upgrade/updating_addons.html#make-sure-your-templates-are-valid-xml

somewhat misleading ?
this xml conformance seems to only be relevant to Chameleon 1, not Chameleon 2.
I checked all templates shipped with Plone 5.0.7 with xmllint and hundreds of templates are reported not xml compliant