Interesting article which makes a lot of sense:
“Forget personnel, forget Coaches and forget owners, as there has been an ever-flowing supply of these over the years. Sports psychologist Geir Jordet has worked with teams in Norway, Denmark, Sweden, England, Germany, France, Belgium and the Netherlands. He believes that certain teams are more at risk when the word ‘optimism’ starts to be used. Once the under-dog term is dispelled due to good performances, optimism takes over and here is where the danger lies.
What happens, according to Jordet, is this optimism that comes from favourable public appraisal towards the team could be linked to displays of ‘escapism self-regulation strategy’. This means that, from a phycological perspective, when a team is praised by its fan base in a sudden display of belief, this can bring about an escapist manner that mean the team starts to avoid reality and technically believes its own hype. This trigger blocks in the self-regulatory strategy, that monitors self-performance.”
https://www.football-italia.net/116450/pazza-inter-are-repeat-offenders
Based on this, it is our duty as fans not to compliment the team no matter how well things go.