The thing is minority groups of people or people who were and are still treated differently because of who they are, who they are attracted to, the colour of their skin etc. have had enough and found the strength to push back. This is what has happened. It’s ok if you (and I don’t know mean you personally) were born straight ,white and cis (cis - not transgender) because you haven’t faced the extremely challenging struggle growing up. Ok you may have struggled in other ways for example grew up in poverty or family issues etc but when you’ve experienced years of a vast number of challenges as a result growing up in a society where you are treated differently there becomes a time when things boil over and you have just had enough. You then make the demands for changes so this can’t happen anymore or at least reduces it. It’s very easy to say something like people are too sensitive to say something but if you have walked in the other persons shoes - life is far worse vs being worried about saying the wrong thing.
To be honest most times people don’t have an issue with saying something by mistake aslong as it wasn’t done in a deliberate derogatory way. I mean how easy is it to just say oops I actually meant this or sorry I got that wrong and move on. Much easier than facing the daily challenges because you are seen as different which let’s face it - society sees as wrong. Just because someone is in a minority it doesn’t mean you are wrong.