I've been getting contacted by random transphobic harassment from various "blank" user/s, and they claim they knew i was trans "from my profile". So be sure to only add friends you know and if someone adds you and acts friendly and then keeps talking about trans stuff and "there are only two genders"-y, block them and report them for harassment. Also if you do get contacted by a steam page list their usernames here to keep other people safe from the harassment of that person.

https://gtm.you1.cn/id/blankerpersona/