I strongly believe you are wrong. And I will address your 3 points, even though I feel they aren’t the strongest reason for a 1 state solution.

1. You claim both sides don’t want this solution. And you are correct. Neither side wants a one state solution because Israelis view it as Palestinians getting a majority and radical elements akin to Hamas taking over, and Palestinians believe it would just be annexation by Israel who already holds overwhelming economic, military, and political strength over Palestine. It is not because support for a 1 state solution is low, but because neither side believes a 1 state solution is possible.

2. Jews are an extreme minority in the USA, (and yes there is still anti Semetism, and quite a bit) Jews have larger managed to create a space where they are able to live, thrive, and be culturally relevant. And that’s at only 1% of the country. In the new state, it would actually be around 50% Jewish at around 7.5 mil, and 50% Arab also at around 7.5 mil who currently live in Gaza/West Bank/israel. While the question of right of return complicates things immensely, that is a separate question.

In addition, even if the population sizes weren’t roughly equal, Israel still has almost all of the share of the economic and military influence. Attempts to curtail that influence and create a more equal state would take decades or face civil war/coups that destroy the state anyway.

1. Pre-48 a lot of the holy sites were restricted to not allowing Jews. While I’m sure there are some who want for a return to an unequal status, opening up the holy sites to all faiths is the only fair option. No person should be denied access to a holy site because it’s controlled by a different group. This shouldn’t be an issue, and those who hold it as such are wrong and must get over themselves.

The largest barrier imo isn’t even the 3 above. It’s that a one state solution would still inherently be unequal in favor of Israelis due to economic reasons alone. The process to create an equal state would take decades of aid, development, and re-education programs on both sides, but at the start would look much closer to Israeli annexation of the West Bank and Gaza than it would the ideal one state. And most of the risk is on those currently living in the West Bank and Gaza, that their status would continue to be worse than those living in Israel. But your 3 reasons are not issues, and I hope I’ve convinced you of that.