I feel like I'm, perhaps, just playing a game of "pile on" at this point in the thread? But wow.... I read this and all I could think of was, "Thank-you for bringing this issue back up!!"
I understand in the grand scheme of things, I'm a niche use-case. But I've been running FreeNAS and then TrueNAS (Core) for years as my home media server platform. Ever since it was clear Microsoft was abandoning their "Windows Home Server" product, I was looking for a solution that handled large numbers of disks with a "hot swap" solution for drive failures, but also one that could run several things I rely on as the primary reason to keep it online. (For me, that includes Plex as a must-have, but also HomeBridge since it links my home automation products with my iOS devices. I also run NextCloud, which turned out to be my best option to share files/data with my friends over the Internet. I also have Time Machine backups from two Macs backing up to TrueNAS over my LAN, and run a second TrueNAS box that serves as the backup box for the primary one.)
I've complained on here numerous times about the plug-in situation, but all I ever got in response were excuses and some comments that felt more like personal attacks. (EG. Make the effort to learn more about the OS and the app you want to use so you can install it yourself and upgrade it yourself without needing a plug-in as a crutch.) My point has always been this: Even as an I.T. professional in the field for 30 years now? I only have so much time to invest on "diving deep" into specific topics. Concepts like these plug-ins should be there to make "one click, plug and play" work of installing and using the applications. It's great if someone WANTS to learn more about what makes them tick and where all of their settings lie in the folder structure, etc. But commercial OS options like using MS Windows or MacOS generally don't set those expectations anymore. People run a setup program and go. I'm willing to put the work in to use a free (and more stable/capable) solution like Linux or BSD, especially in the capacity of a server that needs to run 24/7 with minimal downtime. But these plug-ins are promising something they just don't really deliver.
I might eventually move to TrueNAS Scale. I've had several people advise me to do so already. But whether or not I do that? It makes sense to me that TrueNAS Core should just trim back the plug-ins feature and only offer options of ones known to work properly with the system. If users report one is out of date and generating errors during its setup or usage? Remove it and inform its creator (if possible) that a new version must be submitted.