I don't think anyone actually believes Putin personally organises many individual operations in foreign countries. You're just getting hung up on a common shortcut: "Putin" means "someone under Putin's (not even direct) command" here.
This is a niche, US specific issue. Assassinations expose agents that take years to plant. If Russia wanted to get involved, they would honey trap executives, hack them, etc.
Getting involved at this low level is absurd.
It’s like finding a Turd on you lawn, and claiming it’s part of a Russian Plot.
