I noticed that the /jer_profile doesn't work, unless cheats are enabled.

Perhaps it would be a good idea to update the wiki to include the following:

Note: Profiling is not yet implemented for 1.15+. Using an OTG world will not work with the profiling. Instead make a regulair world (the generated information will be the same either way).
To start profiling, create a local world and enable cheats (don't need to be OP). You can then use /jer_profile [chunk amount] [all] to create a world-gen-scan.json

This should help users to more easily find out why the command isn't found.

Edit: Also include that an OTG world will generate an error and make the server crash. (example of crash log in the comment below).

crash-2021-04-05_11.48.12-server.txt