Chess Online

Did Lutz enter this in a competition?

Indeed. I am also on his ignore list. As far as his plagiarism, Hans Gruber, judge of the 7th Composing Tourney of FRME, 2021, wrote this:

It was particularly annoying that some submissions clearly were plagiarism, only slightly reworking famous problems (without citing them!), in most cases deteriorating the original problems, for example by ad-ding very coarse introductory moves like capturing officers. No3 #19 problem Ka5/Kc4 (12+12) Lutz Neweklowsky is such a deterioration of Karbowiak & Krätschmer’s 1st Prize, Marandjuk 70 JT, No4 #66 problem Kh2/Kg6(12+15) Lutz Neweklowsky is one of Žigman’s Special Prize in Mat 1976. In the same vein, No7 #23 problem Kb4/Ka2 (8+15) Lutz Neweklowsky misused a Hartong composition, No8 #21 problem Kh7/Kc6 (5+14) Lutz Neweklowsky a Popandopulo problem. There is reasonable suspicion that these are cases of deliberate plagiarism (I wish I would be wrong), as all are copies of originals (which had quite unique constructions), but have been mirrored after reworking, a well-known strategy to camouflage one’s activity.