I'm Romanian and have many Polish friends. This is not even remotely accurate, except for basket cases that I have yet to meet.
Keep in mind that Poles are likely to use a single, male variant of the surname, rather than explain the intricacies of inflection in the Polish language.
Her father as a matter of course got letters from all her leisure activities, school &c addressed to 'Mr. Yuri ----skaia'. - as her last name was ----skaia, obviously his would be, too.
At least for us inflectionally challenged Norwegians.
Hope that helps.
language 2 embeds gender in the word itself.
names are words.
it's a lose-lose situation: native speakers of language 2 will look at what you wrote and cringe or just assume you're ignorant. they won't get the point you're trying to make, null, nada, 0% chance. source: i'm a native speaker of language 2.
You can talk about someone at length without mentioning their gender once.