Of course it’s brought up all the time as it’s a metric of the quality of the personnel you’re employing.It’s literally brought up all the time how he’s on £15 million a season and therefore is expected to be delivering much much more.
Wages are mentioned regularly when you’re talking about bringing in elite players.
Irrespective of results, you’d have to say the in-game management, tactics, team selections etc. aren’t inline with a manager being paid that level of remuneration, so it’s an obvious stick to beat him with.