blarg, got suckered into a substack article (they had their own domain rather than substack dot com, so it wasn't obvious).
Opened the tab to a full-covering "hey, subscribe to this person posts!" Dismissed that and started to read the article. Didn't make it more than a screenful or two down the lengthy article, before another "subscribe to mail notifications!" slid into view, obscuring the article text.
Two annoyances for a page that could have otherwise been a SSG site (plain HTML + CSS + a few images) without all the substacky annoyances. 😑