They're asking him to repudiate Piker and moderate his rhetoric,

What has Piker said that was so horrible?

Apparently, he claimed the US "deserved 9/11". At the time of the attack, there was considerable discussion that the 9/11 attack was blowback from the US messing with the Middle East, for decades. Of course, the Bush junta rejected that possibility, insisting that the US was a dewy-eyed innocent, attacked from out of the blue by the Islamic boogyman.

Here is another possibility:

Hasan Piker shredded over vile suggestion that Jews were responsible for antisemitic attacks against them: ‘Hack who thrives in hate’

“People don’t f–k with Israel any longer. And if Jews in America keep putting this idea out there that they’re singularly invested in Israel, eventually someone will come around and take action not against Israel, mind you, but against American Jews,” Piker said during his Aug. 20 stream.

nypost.com - Democrat rips hasan piker as hack who thrives on hate over his warning to american jews about israel

Seems he is objecting to USians supporting the Israeli government, regardless what extremes of brutality it engages in.

As far as El-Sayed's position:

El-Sayed also responded to Piker's comments, and while he did not condemn the streamer outright, he denounced antisemitism and rhetoric that puts the Jewish community in danger.

"I believe all Americans deserve the right to advocate for what they believe without fear of violence. This is particularly true for communities that have been intimidated for their beliefs in the past," El-Sayed wrote.

"My commitment to Jewish safety is the same as my commitment to the safety of my own daughters," he added. "Antisemitism is a scourge, and we need to address it in all its forms. And I stand against any rhetoric that puts the community at risk."

foxnews.com - Democrat rips hasan piker hack thrives hate warning american jews israel

But what El-Sayed says doesn't matter. One of the articles I read for the previous post said that nothing El-Sayed says matters, because they are going to hang Piker on him no matter what.

What do American Jews think of the current Israeli regime?

The poll also found that nearly one-third (30%) of Jewish Americans described Israel’s military operations in Gaza as genocide. By contrast, nearly half (49%) said it did not constitute genocide, while 21% said they didn’t know enough to say.

Split along party lines, 45% of Jewish Democrats said Israel committed genocide, compared with just 3% of Jewish Republicans.

unpacked.media - US support for israel continues to slide including among jewish americans new poll

Steve