I live in Spain. This is very old news. Hazte Oír are a far-right Catholic group who have also run campaigns against gay people, feminism, abortion etc. Sadly their anti-trans campaign made people more unthinkingly sympathetic to the trans cause, just because it's normal to oppose whatever Hazte Oír are supporting...
Having said that, in general, we have bigger problems here at the moment than trans issues, which are nowhere near as prominent as in the UK/US or some Latin American countries. Mainstream feminism in Spain is still more radical than liberal; surrogacy is illegal, for example. We are more focused on issues like fighting prostitution (Spain has become one of the worst countries in Europe in this area), gender violence, and the ongoing problem with the way rape cases are dealt with.
I work with young people in a job where I come into contact with hundreds each year, in probably the most progressive part of the country. I've only met one who IDs as non-binary. We're doing OK in this regard (for now).