Nah, GotG: Volume 3, Thor: Love and Thunder, Black Panther: Wakanda Forever, Doctor Strange: Multiverse of Madness, Spiderman: No Way Home all did very well and each came close to $1Billion in the box office, No Way Home raked in close to $2 Billion alone.
Black Widow, The Marvels, Shang Chi, Antman: Quantumania, and Eternals shit the bed and are under $500 Million at box office.
Deadpool 3, Captain America 4, Fantastic 4, The Avengers: Kang Dynasty and Secret Wars will do just fine.
They need to take note of those that did well and make future movies better. Loki was a god tier series and I think they are realizing we want more of that. But keep in mind, it's not doom and gloom for the MCU when you're still making profit.