Yep. It’s an important strategy for a deck called Smoke on the Water (Strength/Peace/Finesse).
It’s a game-ending combo when you get it set up, but it’s not broken. Getting 2 tech II units and a maxband hero in play at the same time is not trivial. Your opponent has plenty of ways they can disrupt it before you pull it off.
Maxband Quince + Omegacrons in a Truth/Future deck is another combo that follows the same pattern, and is similarly strong but not game ending.