I agree. Indirectly this also effects battery life by a large amount since a power heavy processor like the Atom requires considerably more battery power and from that weight. iPad is too heavy as is! I tend to take my iPad out of its case when reading at night because the case adds a small but noticeable amount of weight.
a)Search Engine = Default
b)Search Engine = Google
If it is 'a', you're still going to be using the "Default" search engine. Now the "Default" is Yahoo.
If it is 'b', you're still going to be using "Google".
They have not "changes [your] already saved settings to something [you] didnt choose for".
Go eat a Cheeto, count to 10, and come back once you've gotten your nerd rage under control.