There’s a simple fix for getting tired of doing the same thing over and over again:
Just pick a different class.
You’ll pretty much be doing the same thing as Pyro each round anyway, so if you crave variety, just play as someone else. That’s why I pick random class all the time; I get tired of the same thing so I switch it up. Easy peazy.
Also I never said that stock only works on one hale. I just gave Doom as an example. Bosses like Ass Pancakes who literally only have uber for 5 seconds, or bosses like The Rock who move slow as dirt but get no knockback for a couple seconds are also good examples. Stock is also really good for protecting your Engineers and Heavies.
By all means, you don’t have to use stock. You can still use Phlog or the Fragment+Gas combo. I’m just stating that, despite how useless it may seem to you, it can still be useful if utilized well.