There are a few reasons. Most importantly, that kind of conflation of Judaism and Zionism needs to be called out, regardless of who says it. That includes any members of Hamas or any Israelis who conflate them, intentional or not.

Secondly, trying to attribute a quote like that to an entire people, as an attempt to contextualize the Settler Colonialist violence of Israel towards Palestinians, is a terrible and disingenuous thing to do. It's attempting to imply that Palestinians are fighting back out of some inherent Antisemitism, which is completely untrue, instead of fighting back against ethnic cleansing for their livelyhood.

Third, it's important to recognize where this conflation is coming from. Israel intentionally does this conflation to deflect any criticism as simply antisemitism, which comes at the expense of a rise of genuine antisemitism as they then point to the actions of Israel as representing all Jewish people. Which is obviously untrue. When the IDF destroys your house and kills your family, and then says it's in the name of all Jewish people, it becomes harder for those people to got their house destroyed to make that distinction between Judaism and Zionism. So it is equally important to condemn the conflation and understand the context behind it.

The 1988 Charter, which is unreasonable for wanting Sharia Law and belief in the antisemitic conspiracy theory of the Elder Protocols of Zion, does not call for the extermination of all Jewish People. Which is what I'm guessing you are trying to reference.

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 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.