Nothing wrong with them. But, I'm not sure there would be a benefit either.

Except perhaps in the other thread that the person was asking about clearance for fatter tires, and the suggestion that an inline quick release might detension the cable enough for the callipers to open just a little more.

When I changed my old bike from non-aero to aero brake levers, I did manage to lose my adjuster (none at the brake callipers). So far I've been able to just adjust the cable, and run them a little loose, but that might be an application to consider inline adjusters.

Whatever one gets, it needs to be relatively easy to use. I've found that my modified Origin8 "Mickey" adjuster just isn't easy to turn despite the rear stay bridge mount. Not enough to grip onto. On the other hand, most brake lever adjusters I've used (that were functional) tended to work well. I'm not sure about the OP's retro brakes, but I would hope they would be well built.