Price drops are caused by people taking money out of Bitcoin into fiat. Bitcoin is only inconvenient for small transactions - people who have held a significant amount of Bitcoin will find that it's actually not that hard to be spending >1 Bitcoin, and people who still find Bitcoin quite convenient will not be selling by your logic so it would not cause a very significant price drop.
Actually, you'll notice that when you go to that transaction page you mentioned, a surprising number of the transactions are upwards of 10 Bitcoin.
The price drops because of this "
RANSOMWARES" thingy, that is why bitcoin's price exploded right now, there are anonymous people who are using bitcoin in illegal ways, because they want to eliminate bitcoin or they wanted to do their bad things anonymously. And it is not true that bitcoin's price drop because "people taking money out of bitcoin" because there is nothing wrong with that, that is the right way where we could earn money through bitcoin.
It is normal that bitcoin's price is having a price drop because bitcoin's price is so volatile, it would PUMP and DUMP, and the best thing to do when it had a huge price drop is to buy some and wait for its price to go up again so you could have profits while waiting.