Typical misrepresentation of Lamarck. He said that acquired characteristics came in response to necessary adaptation, not in response to random mutilation. Cutting off the tails of baby mice - how creepy, like pulling the wings off flies or poking out a person’s eyes does not disprove Lamarck’s theory of why giraffes have long necks.
Lamarck was much more right than Darwin on this point, IMHO.
My high school biology text, which essentially taught that modern science knew everything there was to know about the subject, actually had a graphic ridiculing Lamarck in comparison to Darwin just to prove how much smarter modern science is. Of course, when I was in high school people still thought Silent Spring was something other than junk science.