With Bitcoin, it's transaction fee.
With altcoins and their smart contracts, it's gas price.
Don't confuse transaction fee on Bitcoin blockchain and gas price on altcoin blockchains.
That is what he said. He even highlight both terms with quotes. This a good lesson though to some who still uses the term fee or transaction fee for both BTC and altcoins but I rarely heard that someone will say gas price/fee when they are talking about Bitcoin. I read a couple replies and I see that they already answered the OP, so I wouldn't repeat it anymore.
Besides, scenarios like this aren't new anymore on crypto or for that two big coins. The only thing about BTC is that its transaction fees can return to normal soon, while I doubt if ETH can also do the same. It is seems that the issue about their high gas cost is becoming a permanent problem already but we aren't bother with it anymore as there are now lots of alternatives created that we can use.