He also put forth the idea that the Hyksos (the guys who ruled Egypt for awhile) were the Amelekites, and that they came along and took over Egypt after the Israelite leaving, when they country was in tatters. Made a good case, I thought.
It’s very interesting. Due to lack of reliable records many theories sound plausible. The strict Biblical account is rather vague in many aspects.
Yes, I've read accounts that try to make the case that these were merely natural disasters. I think they may have appeared like this to many, but I believe the authority of scripture when it says it was guided and caused by God.
It's kind of hard to express it, but this was part of a long series of events in God's plan that led to Jesus Christ and that will lead to His return and eternal kingdom.