not true, because when bitcoin crash every other coins will follow, so it's kinda pointless to hold many different coins, try to hold very few coins, which are a very strong and with different purpose, like maidsafe and bitcoin
Even thats not true with all the coins. For example Litecoin increased on the contrary to bitcoin crashing just recently. But its a gamble to mine all different coins . I would suggest sticking with a coin which your hardware supports and bank on it.
Yes, but we all know why Litecoin has increased during this summer. This was just a well organized pump and dump by one Chinese group. This is nothing if you ask me. In my eyes, Litecoin hasn't done anything this summer, just like the rest of cryptos, the bear market is still in a full swing.