So since my youth, multiple proposal have been put forward, among which the gender-star. Lehrer -> Lehrer*innen, Lehrer:innen.
It was never taken seriously, until we got a left wing government (2022 or so) and since then its getting more and more used. Especially in progressive media. Some even speak it. With a short break that represents the star or :. Sounds pretty stupid, but people do it.
In my mind, its the ultimate form of virtue signalling :-)
but hey. to each their own. I just prefer to ignore it if possible