The MQTT Consumer Plugin for Telegraf allows users to read data from an MQTT broker and pivot it into a horizontal format, similar to pivoting data in Flux, enabling easier data analysis and representation. By using the Pivot Processor plugin, users can transform their data into a more readable format by rotating values from vertical to horizontal, reducing the number of metrics being sent and making it easier to parse data in various formats such as JSON. This allows for a friendlier format for parsing, enabling users to reference field names and creating a structure that is widely accepted within JSON parsing architectures.