How did the devs never see this coming?

So I'm no expert but to my understanding the gas fees are high because the network is heavily congested? Less than 1 percent of the world has adopted crypto and a fraction of this 1% happen to send ETH transactions. Did they not anticipate the network becoming like this and did they not have a backup plan? It's honestly unjustifiable and there has to be bad actors at play. Whom are the bad actors it 100% cannot wholey be the communitys buying NFT's and Shit coins. On the subject of Shit coins there is no arguing or denying ETH has become a Shit coin.