Although it's perfectly fine to have different ENV_PATHs on your different Macs, you don't have to. Including /opt/homebrew/bin in ENV_PATH on a computer that doesn't have that directory won't cause any problems. Same with /usr/local/bin.
Consider running echo $PATH on each of your machines and putting together a colon-separated string that includes all of the directories on both computers. You can set ENV_PATH to that string on both computers.