Rose knows what she's doing, that same strategy worked in her most recent fights. It's just that those tactics are used vs strikers, wrestlers, bjj fighters and not fighters with Judo/sambo base or fighters with judo throws. She should've realized that after the first throw and not engage again the exact same way. Could be more of a coaching/game plan issue. She would've had the advantage striking but instead went for a body lock and held on to it with no takedown attempts twice. You can't control Judo/sambo based fighters like that like you can with other style fighters. Usually that's how fighters wall and stall.
I'm sure the reason is because before he would say underhooks to the point it became a joke on forums because he says it in every fight. So he just switched to pummel as his new word now.