The 1988 Charter, which is certainly unreasonable in its fundamentalism with Sharia Law and is antisemitic, does not call for the extermination of all Jewish People. Hamas wants an end to Israel as an Apartheid State, not an extermination of all Israelis. Under Ahmed Yassin in the 1990's, truces were offered in exchange for Israeli to withdrawal from Gaza and the West Bank to the 1967 borders. The 2017 Revised charter explicitly accepts a Two-State Solution of the 1967 Borders. Check Article 7 and 13 of the 1988 Charter to see yourself, compare it to Article 20 and 24-26 in the revised charter.