The "Reduced Debug Info" feature removes lots of data from coordinates, to block data, to the dimension, to the biome, to hitbox visibility, and much more.

I would expect this to also completely remove the hover text displaying presumably "debug info" over an entity selector in the chat which displays the entity's custom name, type, and UUID.

How to reproduce:

1. Enable the reduced debug info gamerule by running: "/gamerule reducedDebugInfo true"
2. Send a chat message with an entity selector by running: "/tellraw @s {"selector":"@s"}"
3. Hover over the entity selector and see its debug info while the gamerule should seemingly prevent the hover text from being visible in chat messages including entity selectors that are sent while the gamerule is set to true.