Yes, but the setup of the maintenance facility available, and the number of funky odd unproven things in the Turbo technology, magnified that.Wasn't one of the many issues with the Turbo the fact that they were a unit, so if one thing needs repair it is not easily removed from the consist?
Operation of fixed trainsets is a proven thing these days - I’d guess that it is actually more prevalent than loose-car train consists.
A lot more thought goes into maintenance processes and facilities, also. Procuring a new fleet often comes with a new maintenance facility or two, custom-built for the model of train.
VIA is already keeping its consists together, and no doubt has structure around when and how consists are changed.