With Apache constantly continuing to drop in marketshare and Nginx continue to increase each year (currently Apache by some estimates is a few percents higher https://w3techs.com/technologies/overview/web_server/all).

Most sites using best practices seem to always suggest using NGINX over Apache. For instance, https://roots.io/trellis/. To note, it's also recommended to use MariaDB over MySQL. 

There are cases where if you have a small site the benefits may be very minor performance wise, or in some case slightly less. But people doing those small sites would presumably simply select the default WordPress 1-click where is people choosing WordPress LEMP are doing so because they know what LEMP is. 

Where LEMP has been the recommended option for years for mid to larger sites  have wondered why this very popular use case continues to be excluded from DO 1-click (now called Marketplace). Especially as the number 1-clicks continue to grow and include very niche options vs WP LEMP which presumably would be much more popular.

Even DO Mods in the forums years ago said, "Currently, we do not offer a one-click WordPress LEMP stack, though I'm hoping that'll change soon as I've put in a request for one and I'm hoping to be as involved in it as possible". 

The new marketplace would let people create third party images with presumably LEMP WP with MariaDB being one of the first, but I imagine most of us don't want to start all our sites with an image created by a third party. As they could introduce security and performance issues (either intentionally or more likely untentionally) vs a DO one which would be updated for best practices whenever WP is updated, Ubuntu is updated, etc and use best practices that align with all their recommendations listed in the wonderful documentation. Hopefully this can be finally addressed.

Also ideally when doing the 1-click it would let you enter information to be used when creating the server such as the domain (so it can automatically setup let's encrypt), database name, wp admin user info, and so on.