Rejecting cookies and going to about:blank. That's a great design decision.
[2] https://matomo.org/faq/new-to-piwik/how-do-i-use-matomo-anal...
Engagement duration tracking is probably the most important thing client-side analytics brings for a site that's trying to make money, but for a personal site, seems unnecessary.
Quite a petty design choice if you ask me.