"A lot" is a big overstatement compared to the numbers of guitars they pump out. They used to not deviate at all and offer way less options and flexibility- in order to avoid any issue and keep the "10-day trial" for everyone. But then people were complaining that they would not be flexible, or not have enough options. Now they allow a lot of extra options, a lot more possibilities, but with the much more frequent condition that "you waive your right to return if you pick that". And now naturally many people (not all people, and not the ones with legitimate issues, mind you) are unhappy because they want to pick all the options plus custom stuff, and yet take 0 risk and be able to return the same way regardless. You just can't win it all. But at the end of the day their business is way more successful now than it was then, so I suspect it will stay that way. To your point though, it's still 100% possible for the buyer to stay within the list of returnable options and not deviate from that; and that's still what I would recommend most of the times. Still way more possibilities than what most others offer anyway.