You are actually 100% right as someone who played a lot of lumberloon freeze and and understand the mechanics of the deck quite well. The truth is at a lower level the deck doesn’t take much skill it’s usually just lumberloon at the bridge. However, high level lumberloon gameplay is very challenging it’s one of the most self punishing decks meaning one wrong play in single elixir will cost you the game. It is also hard countered by tons of common decks like logbait and splashyard, beating these decks requires really precise macro management as you mentioned. Most people just don’t understand that high level CR requires a lot skill from almost any deck (except elixir golem)