Hopium
Portmanteau of 'hope' and 'opium'. Used to describe irrationally high hope in a situation that probably won't pan out — chat insisting the streamer will clutch a doomed game, fans believing in a 1% drop chance, traders convinced a coin will rebound. The companion concept to 'copium': copium is denying a loss has happened, hopium is denying it's coming.
“down 2-0 in the series but maining hopium”