While the probability of the Merge failing is relatively low, ether’s price could drop after the upgrade for two reasons. First, ether has gained nearly 55% in the two months leading up to the Merge in a classic “buy-the-rumor” type move, and so some profit-taking may be seen after the Merge. Further, ether may not immediately become a deflationary currency with depreciating supply after the Merge, disappointing those positioned for that supposedly bullish effect to kick in right away.
Source: https://www.coindesk.com/markets/2022/09/14/merge-focused-hedging-makes-ether-shorts-most-expensive-in-16-months/?utm_medium=referral&utm_source=rss&utm_campaign=headlines