I think there's a huge difference between Israel the country and government and Jews for example.
Criticising Jews is generalisation because they're not one entity and not all the same. One Jewish person is not responsible for the actions of the others. So yeah criticism is automatically discrimination and in this case antisemitism. You can criticise individuals for their actions but not generalise that over a whole people.
The state of Israel, well that is a singular entity with a clear power structure and certainly can be criticized for its actions. I don't think that amounts to antisemitism. Because Israel isn't made up of only Jews.
And trans people, why do people feel the need to criticize them? Let them be who they are, they're not harming anyone. Maybe your holy book says it's wrong, well you can apply it to yourself but not others who don't follow your beliefs.
And yeah obesity is bad. I'm obese as well and I know that. It's just very hard to do something about it, the same way you can't tell a depressed person to just be happy. Some people have a huge tendency to gain weight and overeat. People without this problem underestimate the difficulty.