Yeah, I agree. I’m not the biggest fan of Sriracha, but the purpose isn’t to be spicy. It’s to add spices and flavor. You can add other stuff in addition to make things spicy. Similarly, Tabasco is a seasoning. It’s technically labeled a hot sauce, but it’s very mild and there for the flavor. There’s plenty of other options to increase the heat. They serve different purposes.
If it’s a call-to-action, you always need the /s. Some people will see it and listen if you don’t. Sometimes you can get away with leaving it off, but not if you’re telling people to do something bad.