I would love for that percentage to go up, and we are hiring! High velocity and high scale backend work, tons of React with Calypso and Gutenberg, the most leveraged systems group I've ever seen, a really lovely-to-work-in native apps team, and of course everything coming in with Tumblr.
granted, i'm not trying to make a business selling wordpress templates, or trying to use wordpress in some way other than just as a blog. but a lot of the gutenberg criticism seems to be of the "i hate this because it's new" variety.