Ardor, once it is launched, will not have the scaling problem.
It doesn't have smart contracts though - so will not 'take it over' per se... but it has what they call 'smart transactions', which means you have a lot of options for what transactions can do (e.g. with
phasing). For most use cases that should be enough.
BURST has smart contracts. Actually had them before Ether did. But I don't see nearly as much active development and marketing.
It might be able to deal better with big blockchains, as it's mining is based on hard drive space anyways... but I don't know too much about it.
Anything else, that just clones the Ethereum idea, will run into the same issue according to the article. Thanks for sharing it - good read.