No matter how weak Manchester United looked this season, they eventually won the trophy, and Arsenal, which was much better, remained nothing.
It is really funny to see some Manchester United fans say something like this towards Arsenal. I don't even think Manchester United fans should come out and start mocking Arsenal in this way after Arsenal defeated them home and away this season. Arsenal is playing in the Champions League next season, but Manchester United just had an opportunity in Europa, so I don't think mocking Arsenal fans in this way will cause them that much pain.
But at the same time, no one is saying that Arteta could be fired
Why will someone even think that a good coach like Arteta will be fired? I don't think any club on earth will currently like to fire Arteta for his performances this season, finishing the Premier League table in second place and making it to the Champions League quarterfinals with his current squad. Honestly, it is not easy work. Currently in the Premier League, one of the best coaches this season after Guardiola is Arteta. And with this arteta, I believe Arsenal will achieve what they want very soon. Arteta has the potential to win different titles. Let's keep our eyes on next season.