Players have certainly made golem-centred decks with commanders like Golos, Tireless Pilgrim, but placeholder commanders often dont feel like they synergize with the deck
These archetypes suffer from weaker gold uncommons and/or poor common support, making it difficult to fully realize their themes
In grindy matchups, it provides extra redundancy by sacrificing to tutor for Superior Spider-Man
You typically want to put Obuuns counters on itself to make bigger land creatures, so +1/+1 counter synergies work well in this deck
The only thing that prevents Brudiclad from being overpowered is that when going through the token copying phase, you are only copying the base token values, so if you're trying to copy a token that has a base power and toughness of 2/1 but has multiple +1/+1 counters on it, these won't transfer over to the copies, and the copies will still be 2/1.