If you undermine the legitimacy of the State of Israel then there is no two state solution
But this is not happening, the state of Israel is supported on the international stage. The only state at risk of never securing self determination is Palestine and the illegal settlements are part of that.
If you resolve things using internationally recognised standards of legality, human rights and fairness, as well as the geo-political needs of two states, then there's a chance of coming to a deal.
Absolutely agree with this but again the unconditional support Israel is getting from the big players in the international community are undermining the reality of this happening.
If people are motivated by the need to delegitimise the right of Israelis or Palestinians to self-determination, we should not humour them.
People's opinions are irrelevant, it is those at the table ironing out a deal that are important and they, in my opinion, are not motivated by the right of Palestine to self determination.