My AH is like that, too, although not as aggressive about it. In my AH's case, I think it's because whenever I so much as open his toolbox to look for a screwdriver to fix something, he looks at it as a criticism that he's not doing what he's supposed to be doing. I'm not saying it's rational. But I suspect that's what's behind it.
I bought myself a $10 tool kit from Ikea a few years ago. It's not enough to build a sandbox, but it is good enough for most of what I need to use tools for, and keeps my AH quiet.