Xhaka has split opinion among fans ever since arriving in a big-money deal from Borussia Mönchengladbach in 2016 but it seems a growing number are now exhausted of the Swiss international's errors.
Despite picking up two points in their first three games, Cardiff have yet to score a goal this season.
Cardiff, the last team in England's four professional leagues to score a goal this season, finally did so in first-half added time when Victor Camarasa found the back of the net.
Some fans labelled it a "disgraceful pass" while others said Xhaka is "terrible" and Arsenal's "worst player".
But, despite making hard work of seeing off the promoted Welsh side, Arsenal sealed maximum points with Lacazette's late strike to record only their second away Premier League win since December.
Global retirement following Germany's World Cup exit has also contributed towards a turbulent spell for Ozil but, as Cardiff prepare to host Arsenal on Sunday, Warnock has backed him to turn things around.
Having headed Granit Xhaka's corner in at the 11th minute, Mustafi ran towards his teammate, crossing his hands as a reference to Albania's double-headed eagle, which is present on the country's national flag - and the same celebration that earned Xhaka a fine during the World Cup. However, it was Camarasa who put smiles on Cardiff supporters faces on the stroke of half-time with his smashing finish.
Questions have been raised once again about the work-rate of Ozil's play, with Emery's style of play needing his attacking players to provide more defensive cover when the opposition come at them. Threatened a few more times too. In fact, Xhaka's error lead to Cardiff's first goal. Was involved in the build-up for Aubameyang's goal but otherwise a bit quiet.
Ozil showed composure and class on the ball to pick out Alexandre Lacazette to help tee up Pierre-Emerick Aubameyang to make it 2-1 in the 62nd minute.
Lucas Torreira (on for Guendouzi, 71), N/A - Claimed the assist for Lacazette and generally impressed.