Is WordPress Falling Behind as a CMS?

The first paragraph of WordPress has left the building:

I don’t even know where to start with this. Most people don’t even know of my agency, so this probably isn’t a big deal to many of you, but it’s a huge deal to me. I love WordPress. With it, I have felt a genuine affinity for a product the likes of which is matched only by my Commodore64. It will be exceptionally strange for me to no longer recommend WordPress.

The best comment from the Hacker News discussion about this post:

This piece is not particularly constructive. While it’s not required for an opinion piece to present the perfect alternative in order to rant against the status quo…to say “WordPress sucks” and say nothing about the alternatives…? What good does that do?

I can think of lots of alternatives for the OP but all of them have certain costs/tradeoffs that are prohibitive in many scenarios. The OP goes into great detail describe how WP doesn’t meet his needs…I’m really fascinated to know what alternative he’s considered that does meet his clients need and that is realistically doable?