After some testing and checking a mapped version of the game code I noticed that the OpenGL messages are logged as info. With that, when there is an error with a shaders the console gets filled with debug warning messages all logged as info, an example can be seen on the attached image.

This also results on bigger logs, this can be a problem when trying to check where you had an error when working with shaders on resource packs.

Since that no rate limit is applied you can get hundreds of lines printed per second.