>what is he accusing me of
1. You insinuated he was insensitive.
2. You called him out for 'mischaracterization'
3. He was already cranky from Alice 'bothering him with nonsense' in his mind
4. I presume he didn't understand you if you did tell him earlier or wasn't paying attention. Simply saying "she is not a tool" could have been interpreted as personification on your part being that you are so young as in young enough to "play with dolls". He did try to characterize her as plasmoid or slimefolk but her skin didn't match that physiology. He deduced with high confidence that she was a construction and it remains to be seen if he is correct or not. Even now that you compelled him to see her as the personification, he is merely being diplomatic about it.
5. Elves naturally are on the autistic side of the spectrum as compared to humans, they tend to hear what they want to hear, speak with complacent monologs, and don't take criticism well. They have superiority complex and do not easily lend credibility to other races, especially anyone under 100 let alone under 20.
Old men are hard to change and he has a built in fan in Daylinn who will support his conclusions unerringly. He appears to be half-drow, therefore his age should be something between 160 and 200 with not many years left. Daylinn may actually be older as she's likely a wood elf and they live 700 years but never show their age.
It may also be that the Bear brain is peculiar and though powerful in some ways, lacking in others.