You can disagree with Poland's current leaders, but their attacks on Walesa are not new--for years and years Kaczynski and his followers have called Walesa a communist agent. https://www.wsj.com/articles/polands-new-nationalist-rulers-are-erasing-lech-walesa-from-history-1516636420 …
This is the sort of thing I would hear a dozen yrs ago from Kaczynski supporters when I was covering Poland. After Law and Justice won the 2005 election, the party moved to sweep what it viewed as remnants of communist deep state from public posts.