Farm house ales do not. Make a 5% farm house ale. Beautiful beer.
I don't typically do this, but I can not disagree more. "Yeast make beer, humans make wort." It's a quote from Brewing better beer. Yeast temps do matter, having a lager ferment at 80 will give you a really terrible beer, however everything that is used by the yeast will be provided in the mash. The mash is what truly defines what your beer will be. As long as you keep your temps down, the yeast should have little to no impact on the beer itself, at least in an undetermined way. It takes the ability to make the input to the yeast to get a great and consistent output.
If you make a really terrible mash and use a great yeast strain, you will get a really bad beer. If you use a really bad yeast strain, you will generally get something drinkable if the mash was great. Both are very important, but I truly do believe that the wort is the biggest way people can improve in the short term. After that temp control of yeast strains, but that requires quite a lot of equipment, mostly refrigerators. Basically, you have very little control over what the yeast will do given the mash and a constant temp. You are totally free to act on what the mash will be.
Eventually when I buy a house, I will actually have a series of fridges that I can very accurately set the temps to and worry about yeast, until then, I will have to do the best I can and make the best wort possible.