Only if you have enough bombs, which they need to constantly purchase from the US using aid money given to them by the US.
They don't have the stockpiles to eradicate without using their (not so) secret nukes. If they were to do that, there'd be a lot worse follow on effects for Israel. If they simply trickle the deaths over time, people get tired of the horror and need to look away for their own sanity.
That is definitely not true.
I have no idea what crowd composition at European protests looks like, but the vast majority of the people upset about the ongoing genocide are not antisemetic.
There is a propaganda campaign in the US trying to conflate being against genocide with being antisemetic. I'm sure similar tactics are being used in Europe.
If you think it's nonsense, try to go into a anti-war protest with a t-shirt saying that Jews too should be able to live in Middle East. If this thought makes you slightly concerned, you got my point.
Try the same, but opposite argument.
Something like: Would you wear a t-shirt saying “Palestine is treated unfairly” to oct7 memorial or airport/border crossing?