My situation is the following: I have a WordPress free blog that I want to migrate to a static HTML site. However, I cannot execute PHP on this WordPress domain*, therefore, the solution proposed here: The SEO Impact of Migrating from Free Hosting on WordPress.com to Own Hosting does not apply (at least, does not apply any longer).
I am considering doing a "poor man's redirect", as describe here: Can you use an external 301 redirect for a blog post hosted on wordpress.com? How bad would it be?
*Strictly speaking, I could pay to execute PHP code on WordPress. But if I want to install my plugin, I will have to change my domain name.