Id say yes, rsps are... dying at least when compared to Soulsplit having 2k players days.
After pim shut down SS, id say RSPS as a whole took a big hit. Really quality server with really quality content for the most part, as well as a really good owner.
They had their own headquarters for fucks sake, they were more professional than any other rsps ive seen.
Another big contributing factor is the release of Oldschool RS and other games.
A lot of people switched from RS3 to RSPS because they wanted to play what theyve been playing, not move to a whole new game that just happens to look similar to runescape.
And fortnite... dear god the fortnite.
Compared to around a year after SS got shut down, I'd say we have plateaued. There's nothing much new actually coming out of the project thread phase, and theres not many people willing to help and provide good resources for modern RSPS, we are stuck with a lot of stuff thats still in the past.
I'm trying to do my part by releasing snips and info on whats going on in the snips if i've got time, but I've got work and school to take care of as well.
A lot of newbies are still stuck running PI matrix and whatever the OSRS PI is these days lmao, and they arent producing good quality stuff.
That of course could be a problem with their programming skills and habits, but its also a lack of updated resources related to RSPS on this forum
And rune-server, i'd say, is the forum that is the best for looking to start up an RSPS because of all the older resources.
I think it's a problem with the community.
On the programming side, i've tried to work with a lot of people on RSPS projects because I want to get experience working with a team using some sort of version control.
They were either immature and didn't focus much on the project, were extremely toxic (in terms of communication, as in racist and excessive swearing and flaming out people), had unrealistic timelines, didn't expect the amount of work that came with producing quality content, or realized they didn't know as much about programming as they thought they did and couldn't contribute as much as theydve hoped (which is fine, I usually help people out when this happens).
As with ingame, people are extremely toxic and keyboard warrior whenever someone does something that even slightly inconveniences them.
Take staking for an example, I'd go stake a hefty sum and walk after I won, and I'd get spammed in yell and PM what a fucking pussy retard I am because I walked.
Or pking, I'd get a lucky spec and either get flamed for using an op weapon or get ragged (ragging is a really annoying problem that makes the game miserable for more than it makes fun) because I dicked them down and their fragile ego couldnt handle it.
Or I'll be PVMing at a spot and someone comes along and flames me saying they were there there first, but in reality once they tp their "spot", if you can even call it that, is forfeit.
I don't think the problems related to toxicity will be solved, people will be cunts and they wont really change no matter how hard you try to change them.
I do think the problems related to modern resources and more up to date help can be solved.