I would be genuinely interested to know how well the average wordpress blog handles a hug from the HN frontpage! :-)
It's pretty easy to proxy your WordPress with cloudflare's cdn. Then your WordPress isn't hit very often.
WordPress handles volume just fine. Nothing a HN hug would disrupt.
There are cache plugins that effectively turn it into a static site. You could also run CF atop of it.
WordPress is used at scale by many companies.
Wordpress is of course overkill for a personal blog like yours, but implying wordpress cant handle a HN hug is a bit naive.
Millions of sites use WP and there are configurations to mitigate this. Some caching and easy server config will be enough to survive the “hug”