Which high gas fee problem? I would say the opposite: the steepest ETH decline started right with the DENCUN upgrade that further reduced the fees.
Yes, recently, the fees on the ETH network have dropped significantly, and now it is even more profitable to use ETH than some other blockchains. By the way, even centralized exchanges have significantly reduced the fees for withdrawing ETH and ERC-20 tokens. For example, the fee for withdrawing USDT on ETH is now 4 times cheaper than on Tron.