I technically don't have arachnophobia since I'm not afraid of all arachnids, generally just spiders. I guess a huge scorpion would scare me, but I'd rather face a scorpion than a tarantula.
That first video was disgusting, and it kind of hits close to home. I lived in a really crappy house a year ago, filled with all kinds of pests like that. One evening in this particular house I went into the bathroom to take a shower, and as I turn on the water, I look down and a huge tarantula is like two feet away from me. So I carefully back away and run naked out of the bathroom and into my bedroom. I put on some underwear and then have my brother kill the spider for me, and as he's killing it, DOZENS of little baby tarantulas go scurrying out of the carcass.
God, I hated that fucking house.