That’s quite the hot take
I would argue that the STS kit is one of the best, if not the best, bolt on lift kits for a Volvo 240. The top mounts are designed in such a way to address the camber gain caused by the spacer, the rear shocks and springs were carefully selected for their spring rate and valving profile. These are not parts that are just slapped together and put into a kit.
Well, you may think that a 1 inch or inch and a half suspension lift is not worthwhile, there are a lot of other people that do want something in that range. When you start doing a lift that is greater than about 2 inches you run into all sorts of issues that need to be addressed regarding the ball joint and tie rod ends, as well as the suspension geometry gets very wonky.
Edited to remove the voice to text fails.