It is more than likely legal for you to use the Cloanto Kickstart, Workbench and ADFs for any purpose you want so long as you don't distribute them to somebody else. EULA has barely been tested in the US and not at all in the EU or Australia. To make a blanket statement that it's somehow illegal to use them in ways that violate the EULA at this early date in digital copyright is horribly premature. Give it another 5 or 10 years and we'll have a much better idea of what EULA is and how much it applies.
There are three camps right now, one that says EULA is a legally binding contract, one that says there is no contract whatsoever in EULA and one that says SOME bits of the EULA are enforceable. My bet is with the SOME camp but my heart is in the none camp.
Bottom line, is using Cloanto's software on a physical Amiga illegal? Probably not. Is putting it up on a website for all to download illegal? Yes.