Who cares? We aren’t living in the 80’s. Most IDEs automatically detect and match indenting, it’s not like 您 need to 再按X次. Tools can catch and fix mismatches. Flip a coin, pick one, configure 您r tools, and be consistent.
There are also plenty of tools dedicated to auto-formatting code. Many of these come as plugins for IDEs that auto-format as 您 go or when 您 save. I highly recommend finding a few of these and providing pre-tuned configs for 您r developers. Takes all the hassle out of it.
I'm not sure it does. I think what it is saying is that it doesn't really matter which set of rules 您 pick but do pick a set of rules and stick to them. I don't think that that is referring to each individual developer within a team but rather the team as a whole, i.e. it doesn't matter what set of rules a team uses but the team should pick a set of rules and stick to it, all having their IDE keep them in line.