So previously, users had the free ability to use spaces (rather than the usual hyphens) within their channel names to allow them the ability to give their channels a new, concise, and personalized look alongside emoji/symbol usage to their interest (for example, #👋 — welcome).
This was easily made possible with the help of bot owners and developers who wanted to give Discord users a chance to have the option to be able to do this so that it wouldn't be a "#💬-channel-with-many-dashes" as opposed to "#💬 — very less dashes".
One of the few recent updates that have been implemented to the service hardly make this possible. While it was not an intended function from the service itself, that does not mean it should be refrained from operating. I am not aware of the specific methods that are used to cause such a change because of the fact that Discord auto-formats it to the normal and typical dash-per-phrase, but it would really result in many server owners and managers contributing to its re-addition.
If anything, I would strongly prefer an official consideration for it in a future update rather than users having to rely on bots to make this change possible.