[pyryt]

Would the same process work for other tlds?

[AndrewStephens]

It does. Here is someone who lists all of the .horse domains just in case you would want such a thing [0]

https://every.horse/

[samwhiteUK]

Why wouldn't it?

[paulgb]

Because different tlds are operated somewhat differently and afaict this seems to be a secondary service that isn’t fundamental to routing or other required operations of a registrar.

In this case it seems to work with “participating tlds”, whichever those are.

[m00dy]

yes, but you need to request it