Every time you buy the ice-cream you vote for the company to exist - if you are not happy about the company's actions in Palestine or elsewhere the next step should be very easy to figure out.
In fact Unilever has a t least another couple of brands you can try to resist to show that maybe this shit show isn't what you want in the world.
Nothing says "let's change" to a capitalist like a dripping sales.
Got colleagues on their 50s that live care free with a career and no young children to worry about this is bullshit - people can engage with culture whenever and have a great time. This culture over values youth for sure