You’re not being completely accurate there, being an anti-semite does not mean that you hate ALL jews literally, but that you hate them in general.
also, while every Israeli is not literally jewish, it’s an extremely high percentage. Actually when the include the Palestinian areas which Israel controls into the statistic, its still 80% jewish.
So therefore my initial statement stands. If you say you hate Israel, your statement would understandably be taken as you hate jews.
If you were more specific with your statement and said: I hate Israels xxxxxxxx policy, then your statement suddenly offers the additional information for someone to accurate interpret what exactly you dislike.