I think what jeepersheart meant to say was that the axle will not be centered with the purchase of a basic budget boost (mostly with the more popular 2" or 2.5" boosts) because there is no trackbar correction, either by a relocation bracket or after-market adjustable trackbar. Without this correction, some JKs have experienced issues with ESP inadvertently triggering on sharp corners, off-ramps, etc.
However, this is NOT a result of the budget boost. This may also happen with traditional coil lifts if no trackbar correction is made. This and other issues are the result of how high you lift the JK without correcting other critical suspension and steering components. The higher you go, the more components you need to address, such as driveline angles, caster and steering linkage.
DO NOT BE PUT OFF BY BUDGET BOOSTS. They are probably the most popular suspension "upgrade" for JKs and allows people to run larger tires inexpensively. People run them all the time and are very satisfied with them. If you stick to 1.5" or 2", you'll be fine.
On our 2011, we have the TF Leveling kit that uses 2" in front and 1" in rear. We run 33s with no problem and gives the JK a great stance. I didn't correct the trackbars and have no issues. Don't overthink this and make it more complicated than it is. You'll be fine with a budget boost and you'll love it!
2018 JL Rubicon Unlimited, 6-speed, White
1985 CJ-7, 4-speed, 258 I-6, 3" Springs, 33" BFG AT, Gunmental Gray