The main problem is that, in a lot of parts of the US, your options are "drive or be homeless".
The ideal solution is needing less driving overall. But excessively punishing people doesn't fix the problem. They're still gonna drive, most likely.
This is obviously untrue.
It wasn't that long ago these devices weren't mandatory and they'd just suspend your license.
I am actually curious now whether that was more effective since the offender had to endure the judgment of the person in their life giving them a ride to work.
If they set their own place on fire, they're also homeless. Just as self-inflicted, but significantly less dangerous to third parties than driving drunk.
Driving while drunk is not a silly little mistake. A third of all fatal crashes involve drunk drivers. Letting these people drive at all even with a breathalyzer is an abomination. You can expect them to have a similar disregard for other fundamentals of safe driving.