Ethereum is not a decentralized network (mostly a premine scam with 70% centralized premine used for security of incentives with 1 trusted party in control just like bitconnectX, shouldn’t even be mentioned in topic about cryptocurrencies)

From this, we can conclude that even though txs are down, we are seeing much more complex txs in usage and people are using heavier contract functionality over simple sends and receives.
You can say same thing about Bitcoin whose outputs have not fallen that much - (https://outputs.today/ or http://www.blocktivity.info/)
Blocks are used more heavily than ever when looking at actual block size post segwit (https://bitcoinvisuals.com/chain-block-size) to give equivalent metric to gas usage:

More exchanges are using batching and using block space more efficiently. Lightning network transactions can’t be tracked as well. Smart contracts like those used by lightning network are used more heavily too for more complex use of bitcoin transactions, with about 5.2 million bitcoin locked in p2sh bitcoin smart contract outputs today as well. https://p2sh.info/dashboard/db/home-dashboard?orgId=1
This comparison to Ethereum is a joke, there are no legitimate claims to even call Ethereum decentralized and there is no reason for anyone intelligent to use a centralized network like Ethereum known mostly for censorship, money confiscations, and fraud.