I learned bodywork and painting starting back in 1980.
There is absolutely nothing wrong with lacquer based products - unless you're flat layzeeee doing bodywork.
If done correctly there is no more shrinkage than any catalyzed products I've seen. It has more to do with the quality of your bodywork and how far grit-wise you take the filler work out before you start priming.
Catalyzed filler primers have made slap hazard filler work the norm these days IMO
With the extraordinary costs and hazards of spraying modern catalyzed substrates and surfacers, it's no wonder laquer based products are making a resurgence, especially among home builders.
The final thing I'll say about lacquer - it's the only choice for many older cars if you really want a factory type finish or something that doesn't look like plastic.