Your math doesn't quite check out. Some of those fouls will get you a 1-and-1 when you are less likely to make both. You're also using a team FT%, which has been discussed here as a silly idea. Fouling Maia is actually still a great idea, as you mention with your Shaq example. Players in the paint are much more likely to get fouled in the act of shooting than a guard like Smith.
I don't think a lot of teams are going to back off defending Artis, Young, and Jeter just because they can make FTs. It is more of a double-whammy that when they get fouled, they can actually make the shots. I think, if anything, it changes their offensive mindset more than it changes their defenders' mindsets. They can make all kinds of offensive moves and not worry about running into contact, knowing that they can draw the foul and make the FTs. A guy like Maia has to know he'll stay in control and get a decent look, because he's far less likely to cash in at the line.
I can't imagine there are a lot of players that get extra defensive space because they are so good at FTs, especially if that player is taking high percentage field goal attempts like Young and Artis.