Yes, it's natural as a server becomes big, you can't have high-quality heavy-rp and 400 people online at the same time. The higher it goes, the lighter the RP. There's a very short supply of people who enjoy this type of gaming - most old ones quit, new ones just don't. Probably 80% of the originals left. GTA World peaked this high because of the Epic Games free GTA V event + the FiveM migration, which is why they have such low quality but even there, it's not that bad, that's why we can learn from them. While I think it's a horrible option in the long run, if you don't get too involved you can have a very complex and very realistic character, good businesses and factions, people to interact with etc. We can't have a super-realistic game and even then, it's boring and people won't enjoy it (LS-RP barely touched on it and look at the enthusiasm). The light, RPG aspects are unrealistic but they are fun. Most people look for fun, a very very small number look for pure realism and having a "small server of excellent RPers" is a horrible idea, like what are you going to do, the server's one gang member will rob the only business and have the one cop responding? Get shot and have the cop change char into their FD character? You need numbers for realism, you won't have realism with 20 people online, half of who are AFK or on-duty staff, and lighter RP with 900 people is way more fun than heavy RP with 10 (mind you, the same 10, in any scenario). LS-RP used to have good RP but it wasn't the most realistic - plenty of weird unrealistic characters, many being high profile, the mall and idlestacks, houses worth tens of millions of dollar, same with guns, making millions in a "savings" account.
But that's irrelevant right now, the nitpicking won't fix the server or bring back players. It's not about the scripts or the 2 inactive staff members or whatever other small arguments people might make, we need a real change.