Not at all. For example Ethereum and Monero etc have floating blocksizes that will adjust due to market demand. The fee market can get pricey for a while, but it quickly adapts to new volume. In the early days Satoshi begrudgingly put in a 1mb block size limit to prevent DOS, and later through some underhanded political BS, that limit was basically made permanent.
Also you seem to think that network usage is related to some way to electricity usage. Even today, a single person with a laptop could be the only miner, and the network would still run just fine.
The current block reward on Bitcoin is 900 coins per day, so the upper bound on electricity usage is however much power 900 BTC will get you. That number gets cut in half every 4 years, so generally, the max electricity expenditure is actually going down, except that the price of BTC is currently going up faster than the rewards are going down.
Energy usage is directly correlated to price, not utility. There is a loose connection between utility and price, but since utility got capped in 2015 or so, the price has continued to go up, so that connection is pretty tenuous.