Correct, this is their exact MO and has been for decades. "Random thug" recruitment notwithstanding, part of the point of such ops is to prove to themselves that they can, in fact, reach out and touch a target - i.e., exercising the entire operational chain from C&C down to the minutiae of execution. A kind of integration test for sabotage, if you will. (Not saying this specific incident is or isn't anything in particular, just commenting on the general MO.)

If one were in a charitable mood, one could think of this as a "just in case" measure of ongoing capability assurance in the event of a broader conflict. In a less charitable mood, one might imagine it as preparation for proactive action. In either case, if you don't do this kind of sub-threshold stuff at least occasionally, you often discover that when a real conflict erupts, the capabilities you thought you had are in fact literally or figuratively rusty. (See the Russian army's logistical debacle early in the Ukraine war for a recent example.)

Most top tier nation states do some version of this; each one has its own style. The Russians are somewhat unusual in that they care less than most who knows or suspects them of this kind of activity.