I was once told explicitly by GitHub Support (just as a reminder) that one person having multiple accounts is against their TOS, so there’s that. (This was years ago, not sure if TOS has changed in this aspect.)
Their Terms of Service (https://help.github.com/en/github/site-policy/github-terms-o...) say:
One person or legal entity may maintain no more than one free Account (if you choose to control a machine account as well, that's fine, but it can only be used for running a machine).
I was told by GitHub Support less than a month ago that in order for Actions to trigger other Actions I'd need to make a new separate account with repo access and have them act using its PAT.
GitHub is not what it used to be when this "restriction" was made. These days, where a lot of companies decide to go with github, it's not uncommon for people to have one personal account and one work account.
This becomes messy to manage, as it's not easy(as far as I know) to use the same account on your personal PC to do both personal and work work.