I'm not sure what you mean by the statement by the way. Difficulty is a function of the average time difference between each block.
I'm also confused with how the next blocks will be harder to mine. He probably mixed it up with the more no. of confirmations, the harder it is to reverse. If that's not the case, maybe he meant mining a block before and after the difficulty adjustment?
The only way you could interpret that as being true is if he referred to more blocks than average getting mined in an epoch, thus pushing difficulty up, it would make sense as a reply to OP's question about adding more miners, but it's really bad wording.
Anyhow, more miners won't solve the problem unless you manage to find at least 30% of them each two weeks and that ain't going to happen.
Probably because of the congestion of the bitcoin network. If there are more transactions, the longer the transaction will take and be completed.
Again, not the most accurate way of explaining it.
Just because the mempool is double in size it doesn't mean you're transaction will take double the time, pay the price and it will be confirmed just as fast as it would have been with an empty mempool.
Send a 1 satoshi tx and it won't be a question of when it will be confirmed but more of when it will be dropped by all the nodes.
just some little advice if u scalper or just need move transcation fast try other chain like BSC or tron since ETH right now have some problem with fee tx
And what would that solve for a guy that does 1 or 2 transactions a month?
You will have to first send your coins to exchange to transform them into some other shitcoin and that is already a fee you're paying, not even talking about the volatility of those tokens, you might end up with a loss worth 100 transactions.