> Not a single pro-Gaza or anti-Israel activist will acknowledge this

Go easy on the Kool-Aid.

It's the opposite; those things are not talked about because they are universally acknowledged by anyone except the groups themselves as bad.

The problem with Israel is that you have a huge number of people who are not even Israeli gleefully supporting a genocide, either overtly or by doing everything in their power to silence anyone calling it out. This is a stark contrast: the only people actively supporting the oppression of minorities in Syria or Saudi Arabia are those carrying it out. There are no large groups of powerful people solely comprised of Americans in the US or Germans in Germany who do their best to silence criticism of Saudi Arabia. I'm sure you'll be able to find a few PR firms that Saudi paid, or a few people with business interests there who did such things, but it's completely incomparable to the Zionist lobby and the active carrying out of its interests.