Ironically, he seems to have pirated it himself, which makes the copyright claim even more insulting.

PerfectTablePlan: "If you like PerfectTablePlan enough to go searching for a crack for it then why not just buy it? It's a lot less hassle and you won't risk infecting your computer with viruses, spyware and other malware commonly disguised as software cracks."

Dplot: "If you like DPlot enough to go searching for a crack for it then why not just buy it? It is a lot less hassle and you won't risk infecting your computer with viruses, spyware and other malware commonly disguised as software cracks."

There's a bit of rewording in the middle but it's mostly copy and pasted from the other guy's or the common source.