Considering some of the people I've made wordpress sites for couldn't even figure out the wordpress interface, command line anything is a no go for a large percentage of wordpress's intended audience.
But, I'm not sure how easy it is to customize along the lines that people expect from wp (Now, that could be considered a feature - but it also means it could be a hard sell to someone that just wants a wp site).
If what is needed really is a static site (a "web site"/"homepage") -- I think netlifly looks quite promising:
Finally, deployment is the final hurdle. If they wanted to edit a sentence on a WordPress site it's very easy. But with something like Hugo it would be a 3 step process: Edit the file. Build the website. Deploy to your web host.