Thor's mastery over lightning, last seen in his fight against Hela's undead army inThor: Ragnarok, would be the ideal sign of a final triumph in his MCU journey. The character arc seen throughout Thor's various MCU appearances has focused on his worthiness. From believing himself to be the rightful heir to the Asgardian throne to losing everything and eventually overcoming defeat, Thor's development has progressed a great deal, to say the least. By the time Thor: Love and Thunder rolls around, Thor will likely have recovered most of his lost confidence. However, there may be many more lessons Thor needs to learn before he truly becomes the God of Thunder.
Ever since Thor: Ragnarok, the legendary Mjolnir has lost its might. Hela destroyed Thor's hammer effortlessly, and Odin helped Thor realize that his power actually comes from within. Thor harnessed lightning and cut through Hela's soldiers like a knife through hot butter, proving just how powerful he really is. However, Asgard's destruction and Thanos' arrival at the beginning of Avengers: Infinity War seemingly caused Thor to take some steps back, as he then put all his efforts into forging Stormbreaker at Nidavellir in order to face the Mad Titan. Thor's guilt over not killing Thanos had an even bigger negative impact on his mental state, as he decapitated a weakened Thanos, but he ultimately wasn't able to do much damage to the villain's time-displaced variant during the Avengers: Endgame finale.
Related: Love & Thunder Must Break Thor's Villain Trend (For Eternals 2)
Dealing with trauma is a long and arduous process, and even though Thor appears to have left his dependence on food and alcohol behind in Thor: Love and Thunder, he still seems to rely on Stormbreaker
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