I've been blogging since 1997 and prefer to write things on my own site, but yeah, the sort of "rule" on Reddit was to not link to your own blog. I disabled Google Analytics this year, and it should also be free of any ads, so I feel okay about linking to my own (long) posts about stuff, complete with plenty of photos and the occasional video, but I'm still not sure if that is frowned upon as "self promotion" even on the Fediverse...