I just post in between my other duties.
When my posts are longer, its because I rewarded myself with like 30 minutes to an hour of time on CathInfo.
At least in theory that is what I try to do, if a conversation gets too heated and I feel like I have to explain myself more, then I end up spending too much time here.
THIS ^^^. It's not hard. Once an hour on average, I'll skim the various threads to see if anything new was posted, focusing on threads I'm intersted in (maybe 10% on average). Then I'll open it up, see the post, and then may or may not respond.
Despite the fact that I'm the most prolific poster on CathInfo, I only post an average of 8.2 post per day, many of which are short ones. I type very quickly (people at work have made comments about how my keyboard sounds like a machine gun, where I can almost keep up with the speed of thought. AND, I think about these types of issues and questions a lot, so that on a subject I'm familiar with, and likely have posted dozens of times already about, it just flows out of my brain and in through my keyboard. I'd have to say that the total time I spend on average per day is, oh, 45 minutes, with about 10-15 sessions of skimming threads for 2-3 minutes at a time on average, and then about 8 times per day I'll chose to engage, sometimes taking 30 seconds, sometimes a minute. I would probably guess that my average post, if you factor in the long ones, takes maybe 4-5 minutes.
It's not all that hard. Where things are hard is trying to produce polished material. I have about a dozen "articles" I started on my Substack page, but the need to make them more polished and more well-written, etc. ... well, I've not published a single one of them since I started about 6 months ago, because I don't feel they're finished. With posts on CI, I rattle them off without any consideration for style, and often for tone, and that gets people sometimes misreading my tone as being "hostile" where it's mostly just matter-of-fact, boom boom boom, without any consideration for style or tone or anything else, just straight from my brain onto the screen.