Yes, you fall for that erroneous propaganda.  If you would think for yourself, you would be able to understand why that is totally flawed as an idea.  

If there is only one miner in the whole world, there is only one block chain, right ?  Nobody else is able to make another block chain, right ?  Because you need a lot of proof of work to make one.

Now, tell me, that single sole block chain made by the sole miner doesn't suit you.  The whole network "denies" its blocks. So what is "the whole network" now doing ?  Nothing.  No transactions get processed.  No wallets update.  You cannot put coins on an exchange, you cannot withdraw them, nothing.   All nodes came to a standstill.  

So if you are a user, you have the choice of accepting the sole block chain that is being made, or not having a block chain at all.  Bet that you will adapt your node to accept the sole block chain that is around.  Bet that exchanges will do the same.  And in order to get it, you better connect directly to the miner's node infrastructure, if most of your peer nodes came to a grinding halt.

If there's one miner, that makes a block chain according to his wishes, you have no choice but to use it, or to leave the coin all together and all your addresses on it.

I know that's not what the propaganda tells you, but think for yourself, and find a hole in this reasoning.

That's why it is called "consensus by proof of work", not by "number of nodes".