Am I the Asshole?

So I’m an avid chess player and have been participating in some online live games. Recently, I started using Stockfish for real-time analysis while I play. I thought it would help me improve and understand my mistakes better.

However, I’ve noticed that some of my opponents get really upset when they find out I'm using it. They argue that it’s unfair and ruins the spirit of the game. I feel like it’s just another tool for learning, but I don’t want to ruin anyone else's experience.

AITA for using Stockfish during live games?