Look, you've told lies, you've been caught out, just accept you're wrong.
Israeli Arabs can and do vote in National elections. There are Arab political parties and Arabs hold seats in the Knesset.
You present a glossy picture of a rosy situation. Israeli Palestinian political participation is much more nuanced, much more fractious, much more opaque and very different in reality.
Many Israeli Palestinians are denied a vote in nation elections, as proven by an independent web site that I quoted. They are allowed a vote, but only in local Municipal elections. I appreciate that you quoted a right wing Israeli media site contradicting the independent source. That is hardly surprising that what Israeli government claims differs to the reality on the ground.
Also, many Israeli Palestinians refuse to register to vote, even though they may be eligible because they perceive it as legitimizing the authority of the occupational forces of their land, which they are unwilling to do.
Although you claim there are Palestinian parties and politicians, they are effectively side-lined in Israeli politics. Many left wing Israelis support the Palestinian parties. But the right wing governing party seek to ban some of these parties from being eligible to participate, although they were unsuccessful, it illustrates their intentions.
Many other Israeli Palestinians are aware of the denial of Palestinian parties participation so either do not vote as a protest, or feel that voting is pointless. As you accept, the turnout by Israeli Palestinians is very low, for the above reasons.
Israeli Arab turnout for national elections tends to be very low, many not voting as a form of protest, which of course helps Netanyahu cling on to power.
Finally, Israel occupies Gaza and the West Bank, and maintains control but denies the population of any participation in Israeli politics. Of the 2 million that are imprisoned in Gaza, many of them are displaced Israeli or West Bank Palestinians. They have no opportunity to participate in Israeli politics.
So in conclusion, while your opinion, and that of a right wing Israeli media source paint a glossy picture of a rosy situation, it does not reflect the reality of Israeli Palestinians, nor that of the Palestinians of the occupied territories.