Unfortunately, I'm not technically deep enough to really say whether the planned changes will really lead to a reduction in fees. What I have read suggests that the fees can really drop significantly in times when the network has normal traffic rates.
But if there is hype again (cryptokitties or NFT for instance), then fees will increase massively again. Whether as strong as before the change remains to be seen. I hope that Ethereum gets this problem under control, even if I am not particularly positive. It would definitely be a gamechanger.