The EcoClipper in the article is said to take 500 tons of cargo, that is 23 TEUs (Twenty-foot equivalent unit) [1] by weight. Ever Given the ship that got stuck in the Suez canal carries 20 000 TEUs. That is by volume. Not all can be fully loaded by weight, but still. There is a factor of about 1000 between them. Add on the reduced speed for the EcoClipper, and you need ~4 000 sail ships to replace it.
Now we haven't even gotten into cargo handling since the EcoClipper can not easily be unloaded directly by crane.
Simply, it is too low scale.
What is truly interesting is, for example, the Oceanbird program by Wallenius and Alfa Laval [2]. That is making Ro-Ro vessels aided by the wind, ensuring that you get the efficiency gains and hit the slot times in port. The Ro-Ro, Roll-on, Roll-off, part is important since that means you do not clash with unloading requirements coming from cranes.
The shipping industry is also looking into synthetic fuels and hydrogen since the infrastructure is relatively centralized, and they rely on the energetic density of chemical fuels. Where the trips are measured in hours rather than days or weeks batteries are being deployed.
A nice short film from the latter parts of the era of sail is "Around Cape Horn" from 1929, when the narrator worked on one of the large four-masted barques. [3]
[1]: https://en.wikipedia.org/wiki/Twenty-foot_equivalent_unit