I don't see it as defending them. At least, its result is only secondary. I see it as making sure that people who know what's going on in gaza aren't ignored when they talk about it. I'm sure you can figure out what happens to the majority of people who are kept deliberately in the dark about it (they switch off).

To me, its the correct definition and going by it is good for its own sake.

If I was a social media propagandist, obviously I'm not saying you are, I would foster a culture where people call Jewish Israelis nazis, to gain sympathy for the wrongs the IDF is doing in gaza. As such, I think not doing that is a good idea.

I would ask in return, what is the benefit of not having your argument etc. in favour of palestinian liberation being squeaky clean? Regardless of whether you were ultimately right, can you really justify the use of that decisive word for them when you can do almost the exact same thing with another, equally as good word. If you feel its a bit better, is the improvement justified when the outcome is to raise awareness for Palestine?