I doubt there are specific plans to rewrite her He-Man ties away but they are making a direct point to exclude that part of her past.
In December 2018, Inverse reported there were no plans for a He-Man reference in the show:
Series producer Noelle Stevenson, however, tells Inverse she doesn’t have any plans to include Prince Adam of Eternia.
“He-Man is not really on the table for this iteration of She-Ra at all,” Stevenson says.
Why He-Man Is "Not on the Table" for Netflix's 'She-Ra' Reboot
But they're leaving the door open a crack...
Later in the same article:
The character poses “a challenge” for her modern interpretation of She-Ra’s universe. but Stevenson isn’t ruling him out forever either.
“It would be a challenge, I think, to bring He-Man to life in the present day. Even more so than She-Ra,” Stevenson says. “He’s a very iconic character. It’d be a lot of fun to incorporate him into the world of She-Ra, but I don’t know what my what my approach to that would be.”
Also, after Netflix announced Kevin Smith's He-Man sequel, SYFY reported showrunner Noelle Stevenson's idea for a crossover:
"I'm going to keep pitching this until it happens," Stevenson began. "So, it's He-Man, and it's this awesome, powerhouse, very anime, cool style. Then She-Ra is all poppy colors, and they're both in their style, and they both come together for a She-Ra/He-Man Christmas Special, and Santa will come, and they'll decorate the tree, and teach Skeletor to love. It's gonna be great."
AJ Michalka, who voices Catra on She-Ra, also added that this was an idea she's already tried to put in Smith's head.
"No joke, I worked with Kevin on The Goldbergs for a couple years, and I shamelessly texted him when it was announced he was doing He-Man," Michalka said. "I was like, 'Hey, Kevin. I hope you're well. I heard you were doing He-Man, and I just wanted to let you know that me and the She-Ra girls are ready for a crossover whenever you are.' And he was like, 'I'm gonna consider this.'"
"Everybody tweet him," Michalka told the crowd. "Kevin reads tweets!"
SHE-RA SHOWRUNNER PUSHES FOR HE-MAN CROSSOVER CHRISTMAS SPECIAL AT NYCC