True, however that also begs the question of what you're getting out of the subway project. With the crosstown, not only did we spend a decade on a tunneled section, but that tunneled section is going to struggle with inconsistent headways and a cap to maximum frequency solely due to the existence of the surface sections. Despite having ATC, you can't run 90 second frequencies since there is no way to integrate a surface section to such high frequencies, and its a line that desperately wants tight headways since its a low floor line meaning that individual train capacity is extremely compromised. In other words by making it an LRT, we have built a subway that has all of the costs and upfront problems of a subway, without many of the benefits of grade separated transit. Had we spent a bit more money on building something fully grade separating the line, we could've built something that justifies that cost far more while not being that much more expensive.
TYSSE by contrast has ATC, can run up to 90 second frequencies, has these large high capacity train, so even if it did take a long time to build and while there were complications during constructions, at least you can see what that money went into and what you get for that money.