I rarely vote in the ESC too, most of the years I just watched, some years I don't watch at all, sometimes I cast votes, but usually for several artists, since I haven't had a clear favorite in years. Plus I always voted for all sorts of reason, not necessarily always for the song I liked best, might also be the costume, the country of origin or somebody looking cute
In a German forum some fans who attended the contest live wrote they were treated with hostility by other fans when they cheered for Israel getting points.
It's so out of line with the whole idea of the contest and makes the slogan sound like a farce.
Plus not at all impressed with Greta Thunberg and her mom, they've really become unacceptable.
I've never seen any "ads" for the Israel entry (saw practically no ads for the Eurovision in general, because if I watch the ESC I still do it the old-fashioned way, I want to hear all the songs for the first time on the evening of the finale ). But I still got some people on my instagram feed, who keep advocating their idea of "pro-palestinian" activism (mostly young-ish actors or musicians, who have a lot of opinion combined with endless ignorance) and at least 75% of them post content that makes me realize the importance of protecting Israel and the Israeli people (I try to be tolerant of the content until it crosses a line and then I unfollow those people), so if any propaganda made me vote for Israel, it certainly wasn't "right-wing".
And the only way I could accept the behavior of some of the other contestants and audience was if Netanyahu himself was the Israeli ESC entry.