The Electoral Count Reform Act of 2022 explicitly made the governor responsible for certification and they could only certify one slate of electors.
I worry about the 2024 election, but at the local level more so than the state and federal level. A number of election deniers are still in important election positions.
We can't stop all shenanigans, but the reforms have made the actual process questions much more straightforward. Any disputes get expedited court review and the role of the governors is much more explicit.