I live in Poland and I think I have reasonably good grasp on USA trans activism. I'd say most people in Poland don't know much about this topic. There also aren't that many prominent trans activists here - this is in contrast to gay people where we had gay candidate in this presidential election (and also some minor gay celebrities). Curiously enough, I can't think of top of my head about any famous Ls or Bs in Poland. On the other hand, I think trans activism will grow rapidly during next year, but that's just my gut feeling based on how memes migrate between the countries.

Many of the topics that may be well familiar to this community are virtually unknown among the society, including young people who openly manifest their support to LGBT. Not long ago there was a controversy when some politician from Duda's party said something like "LGBT is not people, it's an ideology". As a result half of my friends put "LGBT is not an ideology" profile pics on facebook; however when I occasionally touch on controversial topics related to trans they don't know what I'm talking about. On a similar page, topics like non-binary, gender fluidity are almost unheard of. If I were to say where anti-LGBT rhetoric comes from it's a mix of catholic tradition and xenophobia.

I'd say the politicians in two main parties mentioned in the article like LGBT as a topic that can give them some screen time when they say something about it, but noone wants to change things. Trzaskowski's party, PO, had opportunity to legislate civic unions but they failed to do so. Duda's party positions itself as right wing, pro church, and they spew anti-LGBT bullshit occasionally but fortunately they also do nothing (funnily enough, they also constantly increase welfare which doesn't sound like a right-wing policy to me). In particular Duda did a meeting with LGBT activists during "LGBT is ideology" controversy. Obviously that's just a pointless gesture, but for me it's a signal he doesn't want to be perceived as full blown homophobe.

EDIT: I wasn't rooting for Trzaskowski. As mentioned above, his party already proved itself incompetent, unwilling to implement changes and spineless in general. I suspect if his opponent in the election was some left-wing guy instead of Duda then he would be talking about how LGBT is a threat for polish culture (in fact at some point he started saying something along lines "me and Krzysztof Bosak have a lot in common". Krzysztof Bosak is hardcore right-wing candidate who considers PiS center-left and who gathered surprisingly big following for this election; Trzaskowski wanted to take over some of his voters with those statements). I really hope that after him losing the election PO will finally go down and a better option will emerge.