Notice that the Palestine stream is the only one (besides "Others") that keeps getting bigger and bigger. Every other individual refugee situation either disappears eventually or, in the case of Afghanistan, cycles to an extent.
The UNHCR annual report gives all the proof we need to show how UNRWA should be dismantled.
Of course, if we would apply the Refugee Convention definition of refugee to Palestinians, there wouldn't be 5.9 million. There wouldn't be 30,000.
And even if you include descendants of refugees, the number would still be roughly one million, since nearly 5 million are either full citizens of another country (Jordan - 2M), they live in British Mandate Palestine (West Bank/Gaza- 2.2M) or they have already moved to other countries (most from Lebanon ~300K and many from Syria ~200K.)
Instead of 17% of world refugees being Palestinian, it is between 0-3% by any sane definition.
When statistics are subjective with different rules for different people, they are meaningless. And when they are weighted to damn only the Jewish state, they are antisemitic.