Is that meaningfully different from the LLC suffix in the US?
it’s like a warning message or something
In practice it becomes an invisible glass ceiling, you just work/pay your way through it when it's time, otherwise keep playing in the shallow end for as long as you want.
Win-win, surely, but patronizing nevertheless.
IMHO, UG are a fudge. They recognised that the barriers to GmbH formation are high but at the same time did not want to drop them so they created something new that allows people to start a company before being able to afford a GmbH.
This contrasts to, for instance, the UK where limited companies (Ltd) are extremely easy and cheap to create and maintain (£1 capital and about £15 cost) so that there is no need for multiple types.