After reading up on tfslmem (sorry, I was out of the loop), all I can say is what an *awesome* little tool, and definitely something worth a donation. I'll be pretty bummed if I never get to try it.
The guy has probably spent a trillion hours of his free time enjoying his hobby and contributing something beneficial, so no doubt most of us would be equally frustrated by comments from the circus clowns.
Anyhow... I hope it's obvious that the majority are appreciative of his efforts, and if he changes his mind, I would donate simply for the "cool" factor alone (even though I have limited time to use my amigas these days). For me, one of the more enjoyable aspects of the 68k machines was constantly testing and tweaking about with the OS, so I've certainly appreciated these neat tools from guys like Chris, Piru, Thor, et al.
cheers
Damion