The biggest issue is that IMO, even nowadays balance isn’t remotely as good as it was before the change, owing to the massive imbalance on all ends the 5v5-switch introduced, and them only working through that at a glacial pace. But even more so, this is annoying because of how it essentially undermines the reason they did this.
Sure, the queue time argument still stands. Yeah. But on a balance level, “Double tanks were problematic for game balance” is a bit of a moot point in hindsight. Yeah, they were, sure. Less so than 5v5 is, it turns out.