There’s nothing to stop you creating a baseline tenant using an MSA and keeping that around to check settings etc.

We have also disabled the option, as my thinking is:
– We don’t fully understand the consequences of the setting just now.
– Disabling options later is always harder
– We would want users to approach the admin team to create new tenants for the consultancy aspect.

Your article is the first I stumbled across that makes a good point for why the feature exists. We always point to the Dev Program, as it is much clearer scoped at development, with information on the limitations and usage rights of such a tenant. A tenant that is created from your organisations tenant, with your official organisational account, might evoke different expectations.