I haven’t published anything in Spanish for at least 4 years. But it’s still a lot easier for me to write in Spanish. I sat down yesterday at nine am and wrote 800 words in a little over 3 hours. In English, it would take 4 days of work to do that. And it would still need a bunch of editing.
The reason is that long, wordy, bombastic sentences are normal to me. They transmit how I think because they are very similar to what’s considered a good writing style in Russian. As a writer, I feel more at home in Spanish even though my vocabulary is a lot more limited than in English. Even when I speak my own language, I use very long sentences with several subordinate clauses.