People have said as much in other places in the thread, but it's probably better to consider "log in" a phrasal verb. So your instinct ("doesn't feel right to m

People have said as much in other places in the thread, but it's probably better to consider "log in" a phrasal verb. So your instinct ("doesn't feel right to me") is right: they form a single semantic unit. You don't log (full stop), you log in.