Then the information on the page does not apply.
For Community there are no support except community support (forums, slack) which is encouraged but voluntary for everyone in the community, including eZ employees.
As for maintenance, as long as there are community members willing to contribute and maintain legacy it will be maintained somehow.
For Enterprise customers the page implies that legacy is maintained until march 2019 and supported (with limitations for things like eZ Platform Cloud) + security handling is committed until 2023 for some versions. So in practice, for us 2019.03 is potentially the last “major” legacy release initiated from eZ side, after that mainly security is focus from our side. As usual security patches are given to Enterprise customers first, and to everyone else some weeks later once the security issue is published.