The merge (end of PoW) won't fix gas prices [1], which is why these projects move onto other (theoretically less secure) networks.

The transition to ETH2 (which is also now called something else [2]) is still an undefined date target.

[1] https://www.google.com/search?q=eth+merge+gas+prices

[2] https://blog.ethereum.org/2022/01/24/the-great-eth2-renaming...