These forums used to be far more active than they are now; you only need to look at the post and thread counts and average them over 8 years (since 2009) to see - and that includes a precipitous decline in activity in recent years.
Actually, the decline is so huge words can't really describe it; check out this archived page from four years ago and compare to now:
Note that Survival Mode had 72814 topics and 981121 replies. Four years later? 88236 threads and 1203926 posts.
In other words, 82.5% of threads and 81.5% of posts were made in the first four years, with a rate of around 50 threads and 672 posts per day for the first four years and only 11 threads and 153 posts per day for the second four years - and even worse if you consider the past year (there were 29 threads in the past 6 days when I sorted them by date, less than 5 per day during the traditional summer peak and including a weekend).
Considering the explosive growth in Minecraft sales since then (22 million alone between June 2016 and February 2017 - more than the total sales up to early 2013, along with 55 million active players as of February 2017) this is really puzzling (and it is not just limited to Survival Mode, so you can't claim that people no longer play Survival). I've also noticed many long-term and/or formerly very active members slow down and even quit altogether stop recently.
As for myself, I've averaged 5.76 posts per day since I joined, which is certainly far above average but far from the highest that I've seen (the vast majority of members have never posted at all; in fact, the average post count per member is currently only about 6 - that's the number of posts they've ever made, not per day, so I've made more than 1,000 times more posts than average). One of my followers (if that even means anything when most have not been on for months if not years, some even for just one day) has 2362 posts, which were all made in just 196 days for 12 per day - then they just up and quit (if they had continued to this day they'd have over 14000 posts by now); others have more gradually tapered off, eventually no longer even logging in or visiting the site, with little explanation (e.g. in the introductions and leavings thread).
Eh, you've got more posts then me already. I made this account a long time ago, forgot about it, then recently remembered it. So, nah, your doing good. The real question is whether I should have done more posts by now.