But let's flip your stupid assertion on its head. Isn't it a problem that one angry chinese miner and one high powered enthusiast on the autism specter can bring Bitcoin to its knees? Why is that? Why is Bitcoin so weak?
A lot of bitcoin haters joined forces to make it look weak. Those are different groups with different agendas. They would hate to see segwit, LN and side chains implemented. Every fucking altcoin can be implemented as a bitcoin side chain without any risk to consumers! But that is the last thing banks would like to see. So they pump the alts they've chosen to distract average Joe from further converting his savings into bitcoins. The alt is not dangerous for banks. They can kill it anytime just by dumping it. 99% of altcoin investors are just desperado gamblers that don't really care about smart contracts or whatever.