This is a very true statement. There are many ways to skin a cat within SmartThings.
For your siren, there are other ways to go about that as well. You can install webCoRE and setup a Piston that sounds your siren as well based on specific IF qualifications. This gives you more flexibility and control over your system, versus relying on SHM. I prefer not to use SHM for intrusion alerts (one because if you have an intrusion alert, you must clear it before it fires again).
We mentioned Routines and Smart Lighting before, and depending on your Requirements (local processing, etc.), webCoRE is much more powerful in what it can accomplish (Routines and Smart Lighting rules are based on very basic quailifications). By creating Pistons in webCoRE and classifying them in different buckets, I have found that it is much easier to keep track of where all my Automations are executed from and being able to troubleshoot from one place.
And before you say, I’m not a programmer, it looks to complicated, it’s too hard or I dont understand it, read-through the wiki for a couple of hours, watch the intro video. It will blow your mind at first, but many people with no technology background have said those same things above, only to come back later and say, OMG I can’t believe I didn’t install this earlier, it was so much easier than I thought, wow, I have so much power
webCoRE and ActionTiles are the two biggest reasons I am still here. The custom lock by @RBoy and NST Manager by @tonesto7 SmartApps are a close 3rd and 4th reason. The 5th reason, a very strong community base with a lot of knowledge that provides assistance and recommendations, options, alternatives, etc… More times than not, you get what you pay for.
As for the degradation of the ST platform this year and the frustration levels that have been reached by a lot of customers, well I’m holding out that this is just a growing pains issue with their cloud restructuring, introduction of the new app and getting everyone migrated over so that everyone is accessing and functioning within ST from the same place and that reliability and stability retirn once again. Fingers crossed for a short period of time