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The order of files in /etc./SSH/sshd_config.d/ matters (and may surprise you)

That's why I erase sshd_config and put what I really meant there. You may say "but isn't it better to patch it properly?". It is not. Yet another vps hoster –> yet another /etc/ssh directory template that may have all sorts of access issues in it. Better to replace it and make it do exactly what you have planned.