I'm a bit surprised about the (in a timeline) 2nd post Blogging About My Repositories to Guide Interest being the first in the generated list of posts. Any hints to fix this?

Maybe related to the original date of posts at the source? If that, it might be a worthwhile feature to allow explicit ordering (series: #«PRIO» «TITLE», with prio defaulting to the UNIX timestamp used currently), or else sort by order of publishing on dev.to instead of any sources.