Why can’t new members answer to their own posts? it doesn’t make sense at all.
Let’s say someone has a question about a feature request that the new member posted.
The only way for new member to adress that is to mention/quote them in the main post or sending a dm.
Quoting is not so bad, but it would quickly add up into a cluttered post.
And dm’ing wouldn’t allow other users to get access to the relevant information.
There’s not any reason to block new users to reply in their own thread, so why disallow them?