The Advocate (major LGBT publication) covers the Heritage Panel as "anti-trans":
Some progressives criticized the alliance between TERFs and right-wingers as an unholy one. “They are capitalizing on a scarcity mind-set rhetoric … saying there aren’t enough rights to go around, and therefore we must prioritize cis women over everyone else,” Heron Greenesmith, a researcher at the liberal think tank Political Research Associates, told NBC. “That’s right out of the right’s playbook, when they say, ‘Let’s prioritize citizens over noncitizens, let’s prioritize white people over people of color.’”
www.advocate.com/transgender/2019/1/30/anti-trans-feminists-appear-panel-right-wing-heritage-foundation
So lesbians who don't want to do dick and women in general concerned about their rights are comparable to white people oppressing people of color... 
Don't they have any actual arguments to make, rather than calling women Nazis and fascists and white supremacists and whatever else?
At least the Advocate quotes WoLF's statement:
But WoLF, which has worked with other anti-LGBTQ groups such as Focus on the Family, defended its participation in the Heritage event. “Due to the increasing push from the lobbyists, government officials, and the medical establishment to institutionalize the medicating and surgical mutilation of gender non-conforming children and youth, of whom a majority may well be gay and lesbian children, WoLF's position is that we cannot afford to ignore those who are concerned about gender ideology, regardless of how vastly we disagree on other political issues,” the group said in a Facebook post.
“WoLF will not shy away from discussing the social contagion of gender ideology with people and organizations whose policies we otherwise do not support. Our foremost concern is the safety and bodily integrity of the women and children whose lives would be placed at risk or ruined if gender identity legally replaces sex under law.”