Not to put too fine a point on it, but the prevailing order hasn't exactly been great for Israel.
Why shouldn't European imperial borderlines be redrawn in some places in recognition of ethnic realities on the ground? Why does Somaliland have to pretend to be Somalia, when in every meaningful way on the ground it isn't and never really was?
Why do we all have to pretend there are no Kurds in the world, or that they don't deserve a place of their own under the sun where they aren't subject to the vicissitudes of, variously, Arab or Persian nationalism?
Why should Israel be keen on backing an Arab-run political order when most of the Arab world still struggles to acknowledge Jews have those very same rights, the ones they so casually deny to Somalilanders and Kurds?
Those aren't even rhetorical questions. I'm honestly wondering why Arabs think Israeli Jews should owe any allegiance to a regional order that hasn't stopped attacking them, in one ideological clothing or another, for six generations...
Somalilanders are kinda amazing. Read their story. And Kurds are a real and distinct and oft-abused people. Read their story too. And neither people's history permits us to pretend they will be safe as permanent minorities.
Israel's recognition of Somaliland, like its support for Kurdish movements in Iraq and elsewhere, puts up alarm signals in all capitals in the region, showing it as a unilateralist, irresponsible actor which will advocate secessionism.